Most stable chair form wil be

got it Reshav??

1,2 cis - a,e, 1,2 trans a,a/e,e

1,3 cis- a,a/e,e , 1,3 trans - a,e

1,4- cis - a,e and 1,4- trans a,a/e,e

jab bulky grp equatorial pe hoga to wo jyada stable hoga

samjhe reshav??

1,2 or 1,4 position me a,e or e,a cis hota

got reshav??

but isme ch3 1,3 diaxial interaction nhi krega

ok acha please tell me why option c cant be stable please give that reason? please

okk wait

wait by drawing i explain u

check reshav

got it i explained above...for 1,2 and 1,4 a,e or e,a cis hoga or 1,3 ke liye a,a or e,e cis hoga

any more doubt reshav??

no doubt thanku so much

welcome reshav😊

i was just confused in stereo maintaining in ques and ans

please mark the answer reshav if it helps u🙏

concept sara padh lijiye phle uske baad achhe se bana lijiyega

got it??

but isme 1,3 diaxial interaction bhi hogi axial pe jo methyl hai usse

yes, axial methyl group show krega

discuss here Reshav. I'll be happy to help you. if you have any doubt you can share me

please tell why option c is incorrect as in that case both groups are at equatorial position and no interaction so that should be more stable why option b

let's check all the options

phle dekho cyclic structure me kya stereochemistry de rkhi he. yha 1,4 cis he to hmesa axial - equatorial position hogi

got it??

ab shyad aapko smjh aa gya hoga 🙏

got it Reshav???

i was just confused in cis trans stereo

now its clear thanku so much sir g

you welcome 🙏😊

what is tge reasons and how to check stability in such questions

Reshav first note that stereo of both groups is above. Keeping this in mind fixed the stereo of bulky group in equatorial position.