Question

Bi2O2(CO3) show the method of criss cross​

Answer 1

Answer:

it's really easy actually....you just need to know the valency and then just transfer the valencies. for example:

Explanation:

suppose we need to show valency for NaCl :

Na valency is 1+ and Cl valency is 1-

just transfer and since the valency is 1 you will get the formula as NaCl