Question

Write the formula for the following compounds using Criss cross method [1x5 =5] i) copper sulphate (ii) sodium nitrate (iii) magnesium chloride (iv) calcium hydroxide (v) potassium oxide​

Answer 1

formula of calcium hydroxide-: ca(oh)

formula of copper sulphate-: Cu(NO3)2

formula of potassium oxide-:k20

formula of magnesium chloride-:C1 is 2

formula of sodium nitrate-:NaNo3

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