Question

Name any two monovalent cations, divalent cations and trivalent cations. Also name any one compound each one of them make.

Answer 1

Two monovalent cations: Na⁺ and K⁺ 

Compounds they make: NaCl and KCl 

Two divalent cations: Ca²⁺ and Ba²⁺ 

Compounds they make: CaCl₂ and BaCl₂ 

Two trivalent cations: Al³⁺ and Fe³⁺ 

Compounds they make: AlCl₃ and FeCl₃ 

Note: Monovalent cations: The cations (positively charged species) which have a valency of +1 are called monovalent cations. 

Divalent cations: The cations which have a valency of +2 are called divalent cations.

Trivalent cations: The cations which have a valency of +3 are called trivalent cations.