Question Detail
Question
A molecule of magnesium hydroxide has the formula Mg(OH)2. What is its atomicity?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Mg(OH)2 contains 1 Mg atom, 2 O atoms, and 2 H atoms. The total is 1 + 2 + 2 = 5 atoms.
Hint
The subscript 2 outside the parentheses multiplies both the O and the H inside.