The polyatomic anion contains elements 1,6,and 8. The cation has 10 electrons.
1 is H, 6 is C, 8 is O. Probably HCO3^-
Cation having 10 e probably is Na^+; however, it isn't clear what question you are asking.
Cation having 10 e probably is Na^+; however, it isn't clear what question you are asking.