Quantum Numbers | What are the 4 Quantum Numbers? Chemistry

[@NAJAMACADEMY]

A lot of students are confused about filling orbitals either in upward or in downward direction. Well, we know that no two electrons have the same spin within the orbital. So, it depends upon you to start placing electrons either in upward or in downward direction. For example, you can start placing electrons in downward direction in 2p orbitals and then in upward direction. Remember that it will not effect the value of "ml", it will only effect the value of "ms". To learn more about filling orbitals, watch our video on Hund's Rule. It is there in the playlist of "Quantum Numbers". Thanks!!! 😊😊😊

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Thank you, but rather in my textbook its written for hunds rule we can only follow placing electrons from upward to downward directions, why?

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[@indianchad3936]

if you are confused in the last part where sir has inverted the electron arrows then read this It really doesn't matter. the spin quantum number is under development and for clockwise or anticlockwise rotation no direction is specified, in an orbital, there are 2 electrons which are rotating differently. You just have to specify which direction is clockwise and which is not in the subjective paper if they ask you. an electron may be +1/2 or -1/2, and another electron in the same orbital should be the opposite. so it doesn't matter, sir is 100% right

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Sir I didn't understood y sir changed direction in last example

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@@mrunalinireavula5422 just to depict that direction doesn't matter , sign and whatever in spin quantum number doesn't matters

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Thank you so much for your outstanding explanation sir! But I felt that the example which you provided @5:38 was wrong since it does not follow the rule of relationship between l and n where l is greater than or equal to n-1 but in that example of 4s, n = 4, l = 0 so here, n-1 = 3 but l = 0 therefore l is lesser which does not satisfy the rule

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[@savithrib4967]

For 3d7 if u place electron starting from upward direction then the value of ms is -1/2. Can u plz clarify it.

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Yes ur correct. U can place any direction either upward or downward at starting then the possible value will +1/2 or -1/2

[@adi1ya]

@@Ankitamote can we start upward and end downward. i mean if we get -1/2 , then will it be correct?

[@NAJAMACADEMY]

Yes, it is right. To learn more about filling atomic orbitals, watch our video on Hund's Rules which is there in the playlist of quantum numbers. It will clear your concept. 🖐❤❤

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@@NAJAMACADEMY dont make fool out of students you are just clickbaiting! You deliberately kept the opposite spin first to increase confusion

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@@kartikpanwar7127 BRO which is crt Shall we start at both upward and downward??

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Sir I didnt get if we can select to start in upward in last example then the spin will be +1/2 right?

[@NAJAMACADEMY]

Yes! You can start filling orbitals either in downward or upward direction according to Hund's rule... Watch our video on Hund's rule... Thanks

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I was searching this comment as i have the same problem!

[@isukhdeep]

@@NAJAMACADEMY but if we do in other way then last electron gets downward direction and we get ms=-½

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Sir in last example if we apply hunds rule then electron goes to last in downward so its ms value will be -1/2 is it right????

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@@medicoslife7570 I hv also confusion with this...if we take first downward then answer is not sm with if we take first upward then how to know in which questions we habe to take first what???

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Watch our video on Hund's Rule. It will clear your concept... 👍💗

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11:25 why you decided to put electron in downward direction 🤔🤔🤔

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Did you get the answer? If we placed it from downward direction we get Ms as a +1/2 similarly if we start from upward direction we'll get -1/2 so we value do we have to use ? I'm getting confused

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@ it's just to show that direction doesn't matter

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How do we decide whether to fill the electrons upwards or downwards first?

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​@@armygirl-vp9bzwe can put any arrow while filling electrons. If we start with upwrds arrow the second arrow will be downwards.

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I have one problem regarding last question...why did you placed electron in downward ⬇️ position?🤔🤔 Please 🙏 reply how to recognize where to put downward ⬇️ and upward 👆?🙄

[@NAJAMACADEMY]

Watch our video on Hund's Rule which is there in the playlist of Quantum numbers. It will clear your concept.

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[@__prithvi_raj__]

Bro i m a bit bad in chemistry can u plzz explain me why in last question u started placing electron downward first i mean if i put it in forward direction first nd then downward then ms would be -1/2

[@NAJAMACADEMY]

Watch our video on Hund's Rule. It will clear your concept... 👍👍👍👍

[@__prithvi_raj__]

@@NAJAMACADEMY sry bro i still cant understand the answer is not in the hunds rule video i guess u haven't understood what i m qyestioning

[@__prithvi_raj__]

@@NAJAMACADEMY i m asking in the very last question in finding ms what if i use all the electron in forward spin first nd the backward spin so by that the last electron would be in -1 and ms would be -1/2

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Exactly... Both answers are correct... 👍

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Bhai ye last me downward configuration kyon Kiya I am getting confused

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How you are filling the boxes first by upwards and then next example you filled downwards? Is it our wish? Please clear my doubt😢

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it does not matter if your value is +1/2 or -1/2

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Why did you put first downward spin 3d7 orbital?

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