Question

Classify cation on basis of their valency :Ca++,Cu++,NH4+,Al+++

Answer 1

On the basis of valency we have 
1. Monovalent cation-one electron in outer most shell like NH4+
2. Divalent cation-two electrons in outer most shell like  Ca++ ,Cu++
3.Trivalent cation-three electrons in outer most shell like Al+++

Answer 2

Answer:dictation ,dictation,monocation,trication ,ca++,cu++,nh⁴+al+++

Explanation: