Here ...can i say that in axial( 2conformer)..that all torsional ,vanderwall,steric and angle strain exist ....

Shweta, I don't think Vanderwaals strain is right term. It's steric strain, actually.

And as soon as the ring flips, this axial bonds become equitorial, which eliminates the possibility of 1,3 diaxial interactions which is why we say equitorial bonds are more stable than axial ones.

thankyou sir 😊

See the position how can you identify cis and trans....and due to 1,3diaxial interaction it is less stable ....In eqautorial no such interactions is pronounced....And steric strain due to H at 3rd pos. and Methyl group..

got this shweta??

can we also say that there is vanderwalls string between groups

No here in chair form steric strain and diaxial interaction is more pronounced

ok

thankyou sir 😊

welcome shweta😊

I have sent one question in mail

okk let me see

sir for 1,3 u have written a ,a or e,e cis... ...trans ni aana chagiye

yes shweta a,a and e,e cis and a,e and e,a for trans for 1,3 position

ok sir

ye yaad nhi rhe na...to phle chair conformation bna lena fr axial equatorial bna lena fr numbering kr dena...ab jo bhi substituted diya rhe chahe 1,2 1,3 1,4 check krna..axial equatorial position..agr same side rha to cis opposite rha to trans

yes sir ye concept clear hai poora

good 👍

but sir I didn't get how a,e or e,a is cis

and e,e trans

dekhne main to sirf a,a trans lgte hai

1,3 ke liye kya shweta??

shweta bs position pe check krna ....up up rha to cis up down rha to trans...bs ye check krna equatorial or axial

I a talking about this

dekho shweta

?

this also