Question

Which of the following is the correct representation of hydroxyl ion?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

The hydroxyl ion or hydroxide ion is OH^- ion. It is formed when in hydrogen ion [$H^{+}$] is removed from the water molecule.

$H_{2}O\to H^{+}+O{H}^{-}$

When $H^{+}$ is removed from water molecules, the shared pair of electron remains with oxygen as oxygen is more electronegative and thus, hydroxyl ion has a negative charge.