Question

Number of α-hydrogens in the following compound is .

• A. 3
• B. 4
• C. 5

Answer 1

The correct option is C 5

What do you mean by an $\alpha$-Hydrogen?

Hydrogens attached to $\alpha$-carbon are called $\alpha$-Hydrogens.

Now, what's an $\alpha$-Carbon?

Carbons adjacent to the functional group is called as $\alpha$-Carbon.

In the given structure there are two $\alpha$-carbons and the number of hydrogens on the $\alpha$-carbons in total is 5.

Therefore, there are a total of 5 $\alpha$-hydrogens on two $\alpha$-carbons