Ions And Formula

Trivalent electropositive ions
When an atom looses three electrons or if any Radical or ion has tripositive charge on it then it is known as Trivalent electropositive ion 


Tetravalent electropositive ions
When an atom looses four electrons or if any Radical or ion has  tetrapositive charge on it then it is known as Tetravalent electropositive ion 

Pentavalent electropositive ions
Radical or ion has pentapositive charge on it then it is known as  Pentavalent electropositive ion