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Write down the formulae of
(i) Sodium oxide
(ii) Aluminium chloride
(iii) Sodium sulfide
(iv) Magnesium hydroxide.
The formulae are
(i) Formula of Sodium oxide
Symbol - Na O
Charge - +1 -2
Formula - Na2O.
(ii) Formula of aluminium chloride
Symbol- Al S
Charge - +3 -1
Formula - AlCl3
(iii) Formula of Sodium oxide
Symbol - Na S
Charge - +1 -2
Formula - Na2S
(iv) Formula of Magnesium hydroxide
Symbol - Mg OH
Charge -+2 1
Formula - Mg(OH)2.
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