Question

Which of the following has highest $K_a$ value?

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

$\text{Acidic}\text{strength}\propto -\text{I}\text{effect}\propto {\text{K}}_{\text{a}}$

Also $\text{(}-\text{I)}$ power decreases as distance increases