Question

What is the secondary valence of CO³⁺ ion according to Werner's theory in [Co(NH₃)₄Cl₂]⁺?

Options

• 3

• 6

• 5

• 4

Answer 1

6

Explanation:

According to Warner's theory, the secondary valence of the Co³⁺ ion in the complex [Co(NH₃)₄Cl₂]⁺ is 6. The secondary valences cannot be ionised.
Neutral molecules or negative ions satisfy these needs. For a metal, the secondary valence is equal to the coordination number and is constant.