Question

If the electronic configuration of element A and B are 1s2,2s2,2p6,3s1 and 1s2,2s2,2p6,3s2,3p4 respectively then the formula of the compound formed by the combination of these elements will be

Answer 1

Hey mate
Your answer is

the compound formed by the combination of the elements will be Na2S.

Answer 2

Answer:

Explanation:

Electronic configuration of A is 1s

2

2s

2

2p

6

3s

1

Electronic configuration of B is 1s

2

2s

2

2p

6

3s

2

3p

4

Valency of A=1

Valency of B=8−6=2

∴ The compound formed by A&B is A2

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