Question

9. Determine the net charge of each of the following ions: (a) sodium (b) oxide (c) hydrogen (d) chloride (e) magnesium (f) sulfide

Answer 1

Net charge is the charge acquired by the respective atom/element after loss or gain of electron. The charge is equal to the number of electron gained or lost. Electron gain or loss is to make valance shell fully filled.

a) Na Na^+1

(2, 8,1) configuration (2, 8)

So, charge +1

b) O (2, 6)

oxide O^-2 (2, 8)

So, charge -2

c) H (1 electron)

H^+1 (no electron, only proton)

So, charge +1

d) similarly

Chloride : Cl^-1 (2.8, 8)

So, charge -1

e) Mg^+2 (2, 8)

So, charge +2

f) S^-2 (2, 8,8)

So charge -2