Question.
(i) sodium oxide
(ii) aluminium chloride
(iii) sodium sulphide
(iv) magnesium hydroxide
(i) sodium oxide
(ii) aluminium chloride
(iii) sodium sulphide
(iv) magnesium hydroxide
Solution:
(i) Sodium oxide : $\mathrm{Na}_{2} \mathrm{O}$
(ii) Aluminium chloride : $\mathrm{AlCl}_{3}$
(iii) Sodium suphide : $\mathrm{Na}_{2} \mathrm{~S}$
(iv) Magnesium hydroxide : $\mathrm{Mg}(\mathrm{OH})_{2}$
(i) Sodium oxide : $\mathrm{Na}_{2} \mathrm{O}$
(ii) Aluminium chloride : $\mathrm{AlCl}_{3}$
(iii) Sodium suphide : $\mathrm{Na}_{2} \mathrm{~S}$
(iv) Magnesium hydroxide : $\mathrm{Mg}(\mathrm{OH})_{2}$