The correct formula for the ionic compound containing Tl3+ and Te2- ions would be
Tl2Te3
Tl2Te
Tl3Te2
TlTe
Option A, Tl2Te3
By Criss cross method, exchange of valency occurs.
Tl valency goes to subscript for Te and Te valency goes to subscript for Tl.
The correct formula for the ionic compound containing Tl3+ and Te2- ions would be Tl2Te3 Tl2Te...