Question

Explain how Al2(so4)3 in Criss cross method

Answer 1

Explanation:

if the elements are given just put the valency for example 11 that aluminium aluminium valency under the name a l and S o4 its valency is 2 under S o4 you need to write two then cross multiplies the valency and get the answer also remember that and polyatomic ions if outside the bracket there is one we need not to put the bracket but if outside the bracket there is two or more number we need to put that bracket