Question

The subshell electronic configuration of some elements are given. (Symbols are not real) Answer the given questions.

A-1s²2s²2p³

B-1s²2s²2p 3s²3p6

C-1s 2s 2p 3s 3p 3d³ 4s²

D-1s² 2s²2p 3s²3p³

(a)Write the atomic number of the element A
(b)Find the group, period and block of the element C

(c)Which element belongs to halogen family?

(d)Write one of the characteristic of the element C

(e) Which is the element that always show zero valency?
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Answer 1

Explanation:

The subshell electronic configuration of some elements are given. (Symbols are not real) Answer the given questions.

A-1s²2s²2p³

B-1s²2s²2p 3s²3p6

C-1s 2s 2p 3s 3p 3d³ 4s²

D-1s² 2s²2p 3s²3p³

(a)Write the atomic number of the element A

(b)Find the group, period and block of the element C

(c)Which element belongs to halogen family?

(d)Write one of the characteristic of the element C

(e) Which is the element that always show zero valency?

Answer 2

Answer:

concept:

period number⇒no. of shells

the complete subshell electronic configuration.

P−1s

2

2s

2

2p

6

3s

2

Q−1s

2

2s

2

2p

6

3s

2

3p

4

concept:

period number⇒no. of shells

the complete subshell electronic configuration.

P−1s

2

2s

2

2p

6

3s

2

Q−1s

2

2s

2

2p

6

3s

2

3p

4