- a) The formula of a compound is AB. If the valency of B is 3, what will be the valency of A?
b) Baking soda is a white solid and has the formula NaHCO 3 . How many of each type of atoms are there in it?
Dear student,
a) Since the formula of a compound is AB and valency of B is 3, then the valency of A will also be 3.
A+3 B-3
AB
b) NaHCO3 = No. of atoms are 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.
No. of elements present = Na, H, C, O = 4
Thanks and regards
a) Since the formula of a compound is AB and valency of B is 3, then the valency of A will also be 3.
A+3 B-3
AB
b) NaHCO3 = No. of atoms are 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.
No. of elements present = Na, H, C, O = 4
Thanks and regards