Write a charge balance of NaHCO3?

Total charge of this neutral molecule = 0
Sodium (Na) and Hydrogen (H) are in Group 1 of Periodic Table and have a charge of +1
Oxide (O) with proton number of 8 (in group 16) has a charge of -2

Total Charge of Sodium Bicarbonate (NaHCO3) = 0
(Na or +1) + (H or +1) + (C or +4) + (We have 3 oxide molecules so 3 x -2 = -6)
+1, +1, +4, -6 = 0

Hope this helps! ????

NaHCO3 is an ionic compound, but not molecular.

NaHCO3 = Na^+ + HCO3^-