How To Determine If A Molecule Is Chiral Or Achiral? With a step by step chart and examples!

[@Study-g2k]

Never delete this. Thanks for the clarity ❤

[@mayyaalocci]

Thank you so much!

[@k.narendranpalanisamy5201]

Thank you soooo much. Now I got everything crystal clear

[@mayyaalocci]

You are very welcome!

[@MaddieFishblob]

Actually surrounding that first point, there are a decent amount of chiral molecules without any stereogenic centers. So I would just be careful if ur trying to rule out chirality based on that alone ((E)-cyclooctene and 1,3-dichloro-allene are just 2 random examples I found online if anyone wants a visual) you’ll often see it with C=C bonds etc. Srsly awesome video tho 🔥 the examples walkthroughs rly helped me out

[@mayyaalocci]

Hi Maddie, you are right! There are molecules with no stereogenic centers that are still chiral. I'm just trying to give the best tips/tricks for easy identification since usually I don't see professors putting those examples on the test. And thank you so much for watching my video! Glad you found it helpful!

[@MaddieFishblob]

@@mayyaalocci ahhh gotcha 😆 & makes sense

[@stephenxing2160]

i love this video i thought a question was impossible but i was able to do it thanks to this.

[@mayyaalocci]

Thank you so much for your great feedback. Glad you found it helpful!

[@JasonYouTube2004]

really helpful to a chemistry student! thank u so much

[@mayyaalocci]

I am very glad!

[@szxnv]

incredibly helpful diagram!

[@mayyaalocci]

I am so glad!

[@arhaanshjhingan]

Will the same work in biphenyl rings too as wont the bulky groups go out of the plane due to steric repulsion??

[@alison3356]

why is it in a) the carbon that's connected to Br doesn't make it chrial, but for c) the carbon connected to OH makes it? How is a) not chiral when the C's connected to Br?

[@mayyaalocci]

For a carbon to be chiral it needs to be connected to FOUR different groups. These videos should help you. kzbin.info/www/bejne/pn-0q35tfdqXY68 , kzbin.info/www/bejne/oKjUgn6Fl72inKs , kzbin.info/www/bejne/pnjEhWV5eqx9Y8U

[@crimecasesolver]

I am Indian but your explanation is to good

[@mayyaalocci]

thank you!

[@pratanudas8800]

It helped a lot. Thank you so much.

[@mayyaalocci]

I am glad!

[@ilcorbellodipianoia8646]

does this diagram work IN EVERY SITUATION or there are exceptions?

[@mayyaalocci]

Hi, this is definitely not for every situation. There are exceptions to everything. There are chiral molecules that do not have chiral centers for example. However, this applies to most molecules and is a good guide for the majority of problems.

[@ilcorbellodipianoia8646]

@@mayyaalocci I am almost finished with my bachelor but this subject will always be the toughest part of chemistry for me. There's no complete guides and there's always something new to discover that could be in the exam of my monstrous professor. Thanks tho.

[@ilcorbellodipianoia8646]

@@mayyaalocci and how do you know when this doesn't work? Are there any other methods i need to meemorize? I am so bad at this part of chemistry and i do so well in every other part its insane it doesnt even feel like i chose the right course when i do this subject

[@asskrisalma2704]

exemple B no line of symmetry : chirale

[@mayyaalocci]

Hi Asskri, thank you for your comment! You are right I showed there is no line of symmetry but wrote achiral by accident! Thank you for pointing it out. I will add it to the comments!

[@elvedin65]

@@mayyaalocci Where did you write that it is achiral? What example are we talking about I'm confused

[@mayyaalocci]

@@elvedin65 So sorry for the confusion, I actually deleted the last part of the video with that example and made a new video instead for the rest of the problems here. kzbin.info/www/bejne/m2maioejbtNjiMU Please let me know if you have any other questions

[@Docter_sr]

Very good❤

[@mayyaalocci]

I am so glad!

[@AbdouHgaza]

What if instead of having cyclohex-3-ene in example e) we have cyclohexane , the molecule still achiral ?

[@mayyaalocci]

yes, that is correct

[@Seaingulf]

amazing work

[@mayyaalocci]

thank you so much!

[@hxrlyyn]

Thank you so much

[@mayyaalocci]

You're welcome! Im glad you found it helpful

[@sapanarai2112]

Thankyou so much ❤

[@mayyaalocci]

You are welcome!

[@Adwaay]

thank you so much

[@mayyaalocci]

you're welcome!

[@4Ntertainment]

Thanks you guruji🙏

[@mayyaalocci]

you are very welcome

[@Abelshawol]

Thank you

[@mayyaalocci]

You're very welcome!

[@Akagami4048]

What is steriogenic center ??????????????

[@mayyaalocci]

It is a carbon with 4 different groups. It is also called chiral carbon or chiral center. Here is my video to help you kzbin.info/www/bejne/bWbGn3SdpriMZ6s

[@DumpzzYamii]

tell me stupid but where do you get the hydrogens or the H like u mention 4 H's??please reply this is my first time watching this

[@mayyaalocci]

Hi, thank you for the comment. In a line angle drawing hydrogens are not shown but are assumed to be there. Every carbon wants to have four bonds. For example if a carbon has two bonds shown, it must also have two hydrogens(not shown but we can show them). Also, in a line angle structure carbons are not shown either. They are at the end of each line or where two lines come together. Hope this helps

[@tbpion9460]

she didnt do B

[@mayyaalocci]

kzbin.info/www/bejne/m2maioejbtNjiMU

[@LOGESHKUMARS-xs7dr]

What about b

[@mayyaalocci]

kzbin.info/www/bejne/m2maioejbtNjiMU

[@arhaanshjhingan]

Will the same work in biphenyl rings too as wont the bulky groups go out of the plane due to steric repulsion??

[@yuvraajbhatter2669]

thank you very much

[@mayyaalocci]

I am glad you found it helpful!

[@VillanelleJaconellei]

thanks a lot 👍

[@mayyaalocci]

thank you for watching