Question

Which of the following is neither a lewis acid nor a lewis base?

• A. $H_{2}O$
• B. $O$
• C. $H_{2}S{O}_4$
• D. $H_3{O}^{+}$

Answer 1

Answer: (D)

$H_3{O}^{+}$

$H_{2}O$ - Lone pair, Lewis Base
$O$ - Vacant orbital, Lewis Acid
$H_{2}S{O}_4$ - Lewis Acid as Vacant Orbital
$H_3{O}^{+}$ - No vacant orbital
$\therefore$ Not a Lewis Base nor Acid.