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Question 1

Write down the formulae of
(i) sodium oxide
(ii) aluminium chloride
(iii) sodium suphide
(iv) magnesium hydroxide

Answer

(i)  Na2O (Sodium oxide)

(ii)  AlCl2 (Aluminium chloride)

(iii)  Na2S (Sodium sulphide)

(iv)  Mg(OH)2 (Magnesium hyelsonide)

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