Question

Write the chemical formulae of Nitrates (NO₃^–) of Na⁺ , K⁺ , Al³⁺ , Mg²⁺ , Ca²⁺ , Zn²⁺ .

Answer 1

(i) For Na^±

By applying criss-cross method:

Formula: NaNO³

(ii) For K^± 

By applying criss-cross method: 

Formula: KNO₃ 

(iii) For Al³⁺

By applying criss-cross method: 

Formula: Al(NO₃)₃ 

(iv) For Mg²⁺ 

By applying criss-cross method: 

Formula: Mg(NO₃)₂

(v) For Ca²⁺ 

By applying criss-cross method:

Formula: Ca(NO₃)₂ 

(vi) For Zn²⁺ 

By applying criss-cross method: 

Formula: Zn(NO₃)₂