Question

In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?

Options

• D₃O⁺

• SO₂

• H₂O

• OH⁻

Answer 1

OH⁻ 

Explanation:

In OH⁻, number of protons = 8 + 1 = 9

number of neutrons = 8 + 0 = 8

number of electrons = 8 + 1 + 1 = 10

Hence, in OH⁻ the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons.