Question

the outermost subshell electronic configuration of an element is 2s^2 2p^4 what is its valency ?
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Answer 1

Answer:

hi

Explanation:

the answer is in the attachment

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Answer 2

Answer:

concept:

group number⇒no. of valence electron

period number⇒no. of shells

the subshell electronic configuration is 1s

2

2s

2

2p

2

which is carbon and belongs to 14 group. element just below carbon is silicon and its electronic configuration is 1s

2

2s

2

2p

6

3s

2

3p

2

Explanation:

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