Valency is the capacity of an atom to combine with the other atoms to form compounds. The valencies of the following atoms are:
Oxygen (O) : 2
Hydrogen (H) : 1
Sodium (Na) : 1
Magnesium (Mg) : 2
Chlorine (Cl) : 1
Which of the following statement is/are wrong in case of sodium chloride NaCl?
The valency of magnesium and chlorine in magnesium chloride is: