Classification of elements and periodic properties class 11 | Chapter 3 Chemistry | CBSE JEE NEET

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Q)What is chemistry ? A)Making law and then creating exception. Edit:- guys thanks for 3k likes

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0:37 Why periodic table? 2:18 History of periodic table 4:19 Mendleev's periodic law 15:20 Nomenclature of elements 19:21 where to place new elements 20:25 Principal Quantum No.s 23:40 Block wise division of PT 24:20 S-Block 27:35 P-Block 30:22 D-Block 33:45 F-Block 35:35 finding group no. 48:19 Atomic radii Trends 52:40 Ionic Radius Trends 56:12 Iso Electronic species 58:39 Ionization Enthalpy 1:00:54 Ionization Enthalpy trends 1:02:52 Compare of Ionization enthalpy 1:09:00 Electron Gain Enthalpy 1:15:29 EG Enthalpy Exception 1:18:34 Electronegativity 1:22:39 Electronegativity trends 1:25:45 Chemical Properties 1:27:30 How to find Oxidation states ? 1:31:42 Anomalous Prop. of 2nd period 1:34:57 Chemical Reactivity

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It indicates 'She is a divine gifted Teacher, who is ever learning and enthusiastic in Teaching from base level'! We are happy and grateful to have such a nice Teacher!

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Physics : Assume . Maths : Let . Chemistry : Except !! 😂

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[@Shinosukenohara777]

53:54 we can also remember like this cation has the word cat in it cat has paws and 'paws' sounds like "paw-si-tive" sorry agar kisi ko aur confuse kar diya ho toh 😭😭💀💀

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Thankyou..you helped me to remember thus correctly 😊😊

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In easier way cation is + because t is like + easy 😅

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cat-ions are paw-sitive

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The best thing in this teacher is that she complete all the topics in singal slot by giving clear information about each concepts of the lesson. But self- study is the only way to get knowledge about everything thoroughly.... Thanks for your efforts mam

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Mam just explained briefly

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let us take a minute to appreciate Roshni ma'am's VIDEO EDITOR.

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No. Of hours

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ERROR

[@thenoobplayer7]

good luck for your exam😁😁😁😁👍👍👍👍(❁´◡`❁) Timestamps 0:00 Introduction 0:43 Periodic table 2:27 History of Periodic table 4:36 Mendeleev’s periodic table 8:14 Modern Periodic Table 15:13 Nomenclature of elements 19:30 Where to place new elements? 21:10 Electronic configurations in Periods 23:06 Where to place new elements? 23:37 Block-wise electronic configuration 24:27 S Block Elements 27:45 P Block Elements 30:31 D Block Elements 33:57 F Block Elements 35:50 Electronic configuration along Groups 39:29 Metals, Non-Metals & Metalloids 41:30 Metallic Character Trend 48:03 Physical Character Trend 48:35 Atomic radius Trend 52:56 Ionic radius Trend 56:28 Isoelectronic Species 58:58 Ionization Enthalpy 1:03:05 Compare Ionization Enthalpy 1:09:21 Electron gain Enthalpy 1:18:55 Electronegativity 1:24:01 Physical Properties 1:26:06 Chemical Properties/Oxidation States 1:32:03 Properties of second period elements

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Thanks

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really helped 👍👍

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Ma'am, kal mera iss chapter k test h aur aaj apse padh kr mera concept hua crystal clear 😃😃.......thank you ma'am❤️

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Dear, is it enough to understand Ncert of chemistry? This video is enough for understanding every concept based on Ncert? Please help 🙏🏻

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@@Priyanka9soni5 yes it's enough also of u wanna crack any course then u waould have to study from books like modern abc etc

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@@yashkumarsingh7800 ummm....No its not enough for exams but is surely enough to make u understand the concepts very clearly

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Cation - + ve ( look at the top of 't') anion - -ve ( look at 'i' ( vertical negative symbol)

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the most difficult thing in chemistry is that we have to learn a rule and to also remember its exception agree or not

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[@rohitkumarsaw_001]

Some Important Points and Terms of the Chapter 1. Dobereiner's Triads:In 1817 a German chemist Doberneiner identified certain groups of three elements. These groups of three elements having similar properties was called triads. When three elements were arranged in order of their increasing atomic masses, the atomic mass of the middle element was roughly the mean of the atomic masses of the other two element 2. New Lands Law of octaves:When elements were arranged in order of their increasing relative atomic masses. The properties of every eight elements were similar to the first one, like the eighth note of a musical scale.This repetition in the properties of elements is just like the repetition of eighth node in an octave of music. 3. Mendeleev's Periodic Law:The physical and chemical properties of elements are the periodic function of their atomic masses. 4. Mendeleev's Periodic Table:When mendeleev started his work, 63 elements were known at that time. He selected hydrogen and oxygen as they are very reactive and formed compounds with most elements. Mendeleev's periodic table contains vertical columns called groups and horizontal rows called periods. There were 7 periods and 8 groups. Noble gases were not known at that time. So there was no group of noble gases.The elements in each group of the periodic tables are similar to one another in many properties. The similar properties of the elements are repeated periodically (a).Merits of mendeleev's classification  Mendeleev's periodic law predicted the existence of some elements that had not been discovered at that time  .Could predict the properties of several elements on the basis of their position in the periodic table.  Could accommodate noble gases when they were discovered. (b)Limitations of mendeleev's classification :-  The correct position could not be assigned to the hydrogen in the periodic table.  Wrong order of the atomic masses of some elements could not be explained.

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Me

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Samajh aaya apko ache se ? I mean is it helpful ??

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BHAI SUPER DUPER HELPFUL MENE YEH CHAPTER PEHLI BAR PADA HAI VOH BHI INSE SAB SAMJ AYA @@sandeep._.06 OR BHAI APNI NCERT AND HIGHLIGHTERS PENCIL VGERA LEKAR BETHNA JESE JESE MAM PADAYE SATH ME NCERT READING KRNA AUR INTEXT QUESTIONS SOLVE KRNE KI KOSHISH KARNA

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Up to now....I never seen any teacher explaining periodic table in the proper way or systemic way.............. very very good 👍 explanation....i understood very well

[@Araham_Rathore]

Timestamps 0:00 Introduction 0:43 Periodic table 2:27 History of Periodic table 4:36 Mendeleev’s periodic table 8:14 Modern Periodic Table 15:13 Nomenclature of elements 19:30 Where to place new elements? 21:10 Electronic configurations in Periods 23:06 Where to place new elements? 23:37 Block-wise electronic configuration 24:27 S Block Elements 27:45 P Block Elements 30:31 D Block Elements 33:57 F Block Elements 35:50 Electronic configuration along Groups 39:29 Metals, Non-Metals & Metalloids 41:30 Metallic Character Trend 48:03 Physical Character Trend 48:35 Atomic radius Trend 52:56 Ionic radius Trend 56:28 Isoelectronic Species 58:58 Ionization Enthalpy 1:03:05 Compare Ionization Enthalpy 1:09:21 Electron gain Enthalpy 1:18:55 Electronegativity 1:24:01 Physical Properties 1:26:06 Chemical Properties/Oxidation States 1:32:03 Properties of second period elements

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😂

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Chemistry m jitni theories nhi h usse zyda to exceptions h 😂😂 do you agree ??

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Hm

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yes

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Is 2024_25 batch present here !? 🕳️💀

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pure and totally ncert based concepts. Ive spent 3 hours reading each line of ncert and madam just taught us within one and half hour without any missing content.

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111 to 118 elements has already discovered.They are Rg,Cn,Nh like.I am very like your class madam.Thanks.

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I am very afraid that that how I prepared this chapter but all coz of u I understood it very well.Very appreciable ma'am.👍🎉🔥

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When my teacher explained this chapter it was very tough to understand but now after watching this vdo i realise that this chapter is too easy ... thankyou maam❤

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Same bro

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Man u almost cover all NCERT in your lectures...so is there still need to go through ncert??

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Tension is directly proportional to Syallabus and inversely proportional to time for exam 😢😂

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the thing towards which you are pointing are not just shayeris they motivates us . Through those shayeris teachers gives us learning .

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Ruko zara ....zara sabar karo...

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Me watching video todays night at 8:51 and tomorrow morning is my exam😂

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13:17 periodic law concept 32:58 imp concept of d orbital 33:48 f block elements

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26:11 JUSTICE FOR HYDROGEN STOP DISCRIMINATION BECHAARA HYDROGEN 🥺🥺

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Feeling sad too for hydrogen

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What about f block elements 😂

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Oh so, I'm not the only one who's preparing only because school is reopening

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@Khushi Bhatia So, does it imply you are done preparing or you have not begun at all?🤔

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@@Rahul-xf8yy I have began because my exam are a month away

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@@Rahul-xf8yy thanks bro. Best of luck you too

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@@Rahul-xf8yy my date sheet brother 25 Feb : English 1 Mar : chemistry 4 Mar : cs 8 mar : physics 16 Mar : maths

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True

[@umadevir978]

Mam........❤️❤️❤️❤️❤️❤️❤️❤️no words for uh🔥🔥🔥🔥🔥🔥🔥thanks a lot from each and every students🙏🙏🙏🙏🙏🙏love uh lot from Karnataka

[@NiteshKumar-dd3om]

Timestamps 0:00 Introduction 0:43 Periodic table 2:27 History of Periodic table 4:36 Mendeleev’s periodic table 8:14 Modern Periodic Table 15:13 Nomenclature of elements 19:30 Where to place new elements? 21:10 Electronic configurations in Periods 23:06 Where to place new elements? 23:37 Block-wise electronic configuration 24:27 S Block Elements 27:45 P Block Elements 30:31 D Block Elements 33:57 F Block Elements 35:50 Electronic configuration along Groups 39:29 Metals, Non-Metals & Metalloids 41:30 Metallic Character Trend 48:03 Physical Character Trend 48:35 Atomic radius Trend 52:56 Ionic radius Trend 56:28 Isoelectronic Species 58

[@nainasharma940]

Mam you are magical ❤ you explain the toughest of all concepts with just a simple and easy way❤❤

[@ucantseemee8332]

11 class is the hardest......! And we cover it one day before exam...... "Is this the power of a god"

[@_blink__k-pop_7582]

2024 - 2025 batch attendence dedo 😭👍🏻

[@Musiclove_never_end]

Here bro but no need to cry were happy to be senior and we have to study to learn something about this interesting thing called chemistry we are here to learn not forced to remember 🌷💗

[@mdsaifi0001]

Moe moe

[@LakshitaShekhawat-w7l]

Bass yahi kam ha aapan ko (I mean u and mee tooo) pura din BTS aur blackpink and fir yaha sa padhai karta ha 🤣🤌🏻

[@whatsinsidethename2373]

Here bro🥲

[@shruti8376]

Lol

[@harendersingh6319]

# chemistry is itself a exception 😀😅😅

[@Nikita-bk2qb]

YUP RYT .......HEHE

[@dhruvgehlot05]

🤣🤣

[@aishleejoshi5157]

Ya😂

[@vishnupriyaashtam2562]

Ley kin students ko exceptions nahi denekahe😅🤨🤐

[@sunset_lover_1]

Concept hua crystal clear 🤗

[@mashupking21]

Mam just bcoz of you I'm stable in chemistry and less reactive😂😂❤

[@ahidaainain3278]

Midnight studied as tomorrow’s my exam😂 Thanks to you ma’am!

[@garimasingh374]

Same 😳😂

[@nareshgurjar5813]

kzbin.info/www/bejne/e33Wg6avqaaZf5I

[@himanshu4768]

Remain whole year what are u doing 😂😂

[@rmslostearpods]

What the hell is wrong with this comment section

[@nikkibts3479]

@@rmslostearpods hlo army...💜💜 How are you..💜

[@prernajasti6720]

1:21:38 mam:'aap aisa karoge nahi", nahi maam ham sach me aisa hi karte hai 😂😂😂

[@_JSC_GameZone]

😑😂😂😂

[@itsDeep-nu9op]

😂

[@dr.pranavsahu8779]

इसी को उल्टा कर दो

[@harshvardhansinhparmar6455]

😂😂😂😂😂😂

[@divyanshisharma5021]

😅😂😂

[@VinayKumar-oh4ti]

Learn o hub provides me a great help......bcz I don't understand concepts by our school teacher. Mam you are great ❤️ #CrystalClear!!!!

[@sanjeevmishra4649]

bro aapne ekdam sahi kaha mere saath bhi yahi same problem hai

[@deepagupta6200]

Ya you right

[@aayushiii007]

Yes bro

[@akshittyagi7178]

Yes u r right💯

[@elenaspector5008]

Wow this session was AMAZING.... After a long time I felt like I can study chemistry well.

[@nbacivilnba8950]

Ma'am thanks alot for explaining, we need more generous people like you!

[@munimkhan2262]

It was a great lecture . i have understood this lecture very well . At first i can't understand but i watch this video , so now,i understand this chapter very well. thank you so much .

[@haxer4283]

is this video enough for jee point of view?

[@danishjan7174]

@A to Z Shorts its OK . don't be sad. May God help you🙂

[@mochisjamswereinjoonspassp4281]

@A to Z Shorts nice trick :)

[@Pr_sahu]

@@haxer4283 don't ask with me ask her

[@ankurgujjar186]

Ok nice letter but you forgot to write date and respected teacher and all that stuff

[@vershaversha3057]

Your explanation is so good mam really concept hua crystal clear..

[@Ayaan-v2r7v]

guess the comment 😉

[@pencil9790]

Phyaicswallah

[@shivambhai1931]

Seems like you are new to youtube studies

[@pravenlakkundi7533]

Physics wallah dekh mare bhai..

[@Ayaan-v2r7v]

@@shivambhai1931 no I'm not for ur kind info

[@Ayaan-v2r7v]

@@pravenlakkundi7533 yeah I use to watch him alsooo he is ♥️

[@Kittu12357]

She has the best explanation ready for every topic my teachers after explaining so dope ,expect us with quick and correct answers...and you do the biggest crime on the face of the earth 🌎 if you said nothing..... & You get “every day “reminder that you are not capable of anything , but to dig ditches.....

[@Riddle...29]

0:00 Introduction 0:43 Periodic table 2:27 History of Periodic table 4:36 Mendeleev’s periodic table 8:14 Modern Periodic Table 15:13 Nomenclature of elements 19:30 Where to place new elements? 21:10 Electronic configurations in Periods 23:06 Where to place new elements? 23:37 Block-wise electronic configuration 24:27 S Block Elements 27:45 P Block Elements 30:31 D Block Elements 33:57 F Block Elements 35:50 Electronic configuration along Groups 39:29 Metals, Non-Metals & Metalloids 41:30 Metallic Character Trend 48:03 Physical Character Trend 48:35 Atomic radius Trend

[@tarannumkhan3819]

25.50 that why chemistry is a subject of exception

[@Raju_yadav_14827]

Tomorrow's my chemistry half yearly exam and here I'm watching ur lecture at 11:30 pm....hope I could've found it sooner😅

[@shreevardhanpatil8783]

Same

[@Arpit_ydv..]

@@shreevardhanpatil8783 mera bhi àaj hai and i am watching this at 3:37 am 😥🤣

[@anushreegarg756]

Same but thankfully I found it sooner😅

[@Ddisha6113]

Mera bhi aj ha at 11o' clock and i am watching at 8AM

[@sgn5165]

bruh why are we like this

[@glorious-x8c]

Raise hand who have exam tomorrow and are studying here today like me 🙋🙋😁😆😆😅😅👍👍👤👤

[@uvais2630]

🙏🙋🏻‍♂️

[@ishabiswas9856]

🙋🙋 tomorrow is my chemistry exam

[@mrdgamingzone968]

🙋‍♂️🙋‍♂️Jai Baba Ki

[@GTA5_gamer55]

😅

[@ayeshssidqa9481]

🙋🙋🙋🙋

[@nitishbhandari4829]

रोशनी दीदी आपका बहुत बहुत धन्यवाद ये वीडियो बनाने के लिए ।❤❤❤

[@vaishnavityagiiii]

Whole chemistry is an exception 🥺❤

[@kuroumi.purple]

🌸really hoping to score good marks!!! ty🌸

[@rajeshjain9079]

Hi everyone. I recommend everyone to watch these vdos before exam if u are not really prepared. Tomorrow is my chem finals n this helped me a lot😀😀

[@Leafyaround]

Exam kaisa tha?? Offline tha kya??

[@rajeshjain9079]

Han yaar😥😥

[@GG-nm8yl]

@@rajeshjain9079 kaisa gya tha bhai srf in videos se prha tha ?

[@Be_mine001]

0:43 Periodic table 2:27 History of Periodic table 4:36 Mendeleev’s periodic table 8:14 Modern Periodic Table 15:13 Nomenclature of elements 19:30 Where to place new elements? 21:10 Electronic configurations in Periods 23:06 Where to place new elements? 23:37 Block-wise electronic configuration 24:27 S Block Elements 27:45 P Block Elements 30:31 D Block Elements 33:57 F Block Elements 35:50 Electronic configuration along Groups 39:29 Metals, Non-Metals & Metalloids 41:30 Metallic Character Trend 48:03 Physical Character Trend 48:35 Atomic radius Trend 52:56 Ionic radius Trend 56:28 Isoelectronic Species58:58 Ionization Enthalpy 1:03:05 Compare Ionization Enthalpy 1:09:21 Electron gain Enthalpy 1:18:55 Electronegativity 1:24:01 Physical Properties 1:26:06 Chemical Properties/Oxidation States 1:32:03 Properties of second period elements

[@SHUBHAM5257A]

Plz upload physics video also mam beause you are the best teacher of my life that i have ever seen and explain everything with good example

[@pracheetagupta5312]

Roshni Ma'am said that the PHY videos will come when chem syllabus is over, she said the PHY videos will come after December.

[@tangstartabletennis]

Go and watch physicswall video

[@himanshuworld783]

Anyone want mam to teach physics .....😌😌

[@utkarshamanhas6892]

Yes

[@rohitmehra4359]

Yes I want 🙄🙄

[@ManjuDevi-ch3rl]

Yes I

[@sureshnitali8920]

yes

[@prabhusiddh4338]

Why no

[@praneshsathishkumar8889]

Thanks a lot maam. Concepts are clearly understood.

[@me_tinkerbell]

* Doubt * According to what u hv said in 13:20 , if i add helium's atomic number to get the element below it, i don't get neon instead beryllium.... [Atomic number of helium = 2 To get the elemnt below the given element = +2 Ans : 2+2= 4 ( beryllium atomic number is 4) ] So is there any exception for this case? Please clear this ma'am.... I understood everything else u taught...thank you so much for your effort.❤

[@KanchanGarg-b7o]

Of course if any thing is different then usual in chemistry is exception😂😂😂😂😂😂😂😂😂

[@EliteOpsGaming-Minecraft]

Your videos really helps a lot...if one studies just before exams, your videos will be enough to get good marks...thankyou so much ma'am!!

[@dhananjay504]

Thank you soo much mam ❤ Bhagwan aapko hamesha khush rakhein...🙏🏻

[@justlaugh3531]

Mam it's my humble request to make videos on part 2 of chemistry

[@bamanjeevandas618]

Hi

[@barkhasingh._03]

She is good teacher she handle two works very Neatly, Teach as well as help in making notes by.. Giving lines of this topic .. Literally I make notes of 15 pages from her.. Grayish block lines... She do very hard world.. Thnx mam, ❤

[@shinishika.k9144]

Concept Hua crystal crystal clear I just loved the session 😍😍

[@volt1905]

Actually I was searching for exam dear...but I don't find that channel....then my friend had told me that examfear had changed their channel as learnohub...I became happy because this is the ancient platform and as we know OLD IS GOLD...this platform is the best for all students who want to study and they Teach concepts more clear .... ONCE AGAIN THANK YOU SO....❤️❤️❤️❤️.....A MILLION LIKES TO YOUR CHANNEL

[@Curious_ih8u]

👀🖇️!~ 0:43 Periodic table 2:27 History of Periodic table 4:36 Mendeleev’s periodic table 8:14 Modern Periodic Table 15:13 Nomenclature of elements 19:30 Where to place new elements? 21:10 Electronic configurations in Periods 23:06 Where to place new elements? 23:37 Block-wise electronic configuration 24:27 S Block Elements 27:45 P Block Elements 30:31 D Block Elements 33:57 F Block Elements 35:50 Electronic configuration along Groups 39:29 Metals, Non-Metals & Metalloids 41:30 Metallic Character Trend 48:03 Physical Character Trend 48:35 Atomic radius Trend 52:56 Ionic radius Trend 56:28 Isoelectronic Species 58:58 Ionization Enthalpy 1:03:05 Compare Ionization Enthalpy 1:09:21 Electron gain Enthalpy 1:18:55 Electronegativity 1:24:01 Physical Properties 1:26:06 Chemical Properties/Oxidation States 1:32:03 Properties of second period elements Thanks!

[@ankita9206]

She is the only teacher who can teach every subject of 9 to 12 classes 🤓

[@himanshufrolic7215]

1 day before exam 💀💀

[@KenakiJskb]

I'm cooked

[@ankitatiwari8066]

Kaise pass hote ho bhai 😭

[@KenakiJskb]

@@ankitatiwari8066 bro I failed

[@KenakiJskb]

@@ankitatiwari8066 Mera izzat sab geya

[@ankitatiwari8066]

@@KenakiJskb us bro 🥲