Question

Sum of alpha hydrogen in both ques.... plz give proper explanation

Answer 1

the answer for 378. is (3+3)+(3+2)=11

Answer 2

The sum of the alpha hydrogen is (d) 11

Alpha hydrogen is the hydrogen attached with alpha Carbon of an organic compound.

Alpha carbon is the first carbon bonded with one double bonded Carbon.

In this question no. 378 (as given in the image),

For, fig. (i), the hydrogens attached with the two side chain -CH₃ groups will be considered as alpha hydrogen.

So, alpha hydrogen count for figure (i) = (3+3) = 6

For fig. (ii), the hydrogens attached with the side chains -CH₃ and -CH₂ of side chain -CH₂CH₃ will be considered as alpha hydogen.

So, alpha hydrogen count will be (3+2) = 5

So, the total alpha hydrogen count will be (6+5) = 11