Question

Classify the following ions into monovalent, divalent and trivalent.

Ni²⁺, Fe³⁺ , Cu²⁺ , Ba²⁺, Cs⁺ , Zn²⁺ , Cd²⁺ , Hg²⁺ , Pb²⁺ , Mn²⁺ , Fe²⁺ , CO²⁺ , Sr²⁺ , Cr³⁺ , Li⁺ , Ca²⁺ , Al³⁺ 

Answer 1

• Monovalent ions – Li⁺ , Cs⁺
• Divalent ions – Ni²⁺, Cu²⁺ , Ba²⁺, Zn²⁺ , Cd²⁺ , Hg²⁺ , Pb²⁺ , Mn²⁺ , Fe²⁺ , CO²⁺ , Sr²⁺ 
• Trivalent ions – Fe³⁺ ,Cr³⁺, Al³⁺