Write down the formulae of
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 : $\mathrm{Mg}(\mathrm{OH})_{2}$