Question

The structure of isobutyl group in an organic compound is

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is A

To determine the structure of the isobutyl group in an organic compound, we need to understand the isobutyl group's structure. An isobutyl group is derived from isobutane by removing a hydrogen atom from the terminal primary carbon. Let's break it down:

• Isobutane has the chemical formula C_4H_{10}, and its structural formula is (CH_3)_2CHCH_3.
• In the isobutyl group, one hydrogen atom is removed from the primary carbon (a terminal end carbon), resulting in the group (CH_3)_2CHCH_2-.

This structural description matches Option A. Below is the corresponding image for Option A:

Let's rule out the other options:

• Option B: This option does not represent the structure that corresponds to an isobutyl group, as it might be indicating a different locant for the carbon chain.
• Option C: Again, this structure does not align with the isobutyl configuration, as it might depict a different branching pattern.
• Option D: This option probably illustrates a different alkyl group entirely, not matching the isobutyl group.

Therefore, based on the detailed analysis above, Option A is the correct structure for the isobutyl group.