Question

Sodium zincate formula by criss cross method

Answer 1

Answer: Na2ZnO2 is the Molecular Formula..

Explanation: Sodium Zincate is formed by Sodium cation (Na^+) and Zincate anion (ZnO2^-) , thus giving rise to the chemical formula of Na2ZnO2.

Criss Cross Method:-

                       Na                     ZnO2

Valency           +1                          -2

****Crossing the Valencies****

          We get, Na2ZnO2..

I hope that the answer was up to ur satisfaction....

Answer 2

Answer:

Na2 Zn O2

Na = +1 * ZnO2 = -2

+1 goes to ZnO2  and -2 goes to Na, when multiplied valencies of each other

Ans: Na2 ZnO2