Consider the following conformations of 3-Aminopropanal, amongst the given conformations (P, Q, R, S) one of them is most stable.

The correct statements for the above is/are :
(I) H-bonding is present in the most stable conformer
(II) Gauche conformation is the most stable conformer
(III) Anti conformation is the most stable conformer
(IV) larger groups being separated by maximum distance in the conformer

Options

A. II and IV
B. I and II
C. III and IV
D. I and IV

Answer

B

Explanation

1) Stable due to H-bonding
2) P is most stable due to H-bonding in it.s gauche conformations.