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NCERT CLASS IX - Science Textbook

Chapter 3 - Atoms and Molecules

Write down the formulae of

(i) sodium oxide
(ii) aluminium chloride
(iii) sodium sulphide
(iv) magnesium hydroxide


The formulae are as follows:-
(i) Sodium oxide = Na2O
(ii) Aluminium chloride = AlCl3
(iii) Sodium Sulphide = Na2S
(iv) Magnesium Hydroxide = Mg(OH)2
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pls click thanks button above and mark as best since i answered first :-)
 Sodium oxide = Na2O , Aluminium chloride = AlCl3 , Sodium Sulphide = Na2S and Magnesium Hydroxide = Mg(OH)2  is the answer
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