Question

Write the name and chemical formula of the

compound formed between each of the following

pairs of ions by criss-crossing their charges [3]

(i) Sodium ion and carbonate ion

(ii) Calcium ion and hydroxide ion

(iii) Aluminium ion and nitride ion​

Answer 1

Answer:

1. NaCO₃
2. Ca(OH)₂
3. AlN

Answer 2

Answer:

(i)Na₂CO₃

(ii)Ca(OH)₂

(iii)AlN

Explanation:

(i)E-Na CO₃

V-1⁺ 2⁻

F-Na₂CO₃

(Ii)E-Ca OH

V-2⁺ 1⁻

F-Ca(OH)

(iii)E-Al N

V-1⁺ 1⁻

F-AlN