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The electronic configuration ofhte eleme...

The electronic configuration ofhte elements. A, B and C are given below. Answer the question from 14 to 17 on the basis of these configuration.
`{:(A,1s^(2),2s^(2),2p^(6),,),(B,1s^(2),2s^(2),2p^(6),3s^(2),3p^(3)),(C,1s^(2),2s^(2),2p^(6),3s^(2),3p^(5)):}`
Stable form of A may be represented by the formula.

A

A

B

`A_(2)`

C

`A_(3)`

D

`A_(4)`

Text Solution

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The correct Answer is:
A
A represents noble gas `Ne.`
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The electronic configuration ofhte elements. A, B and C are given below. Answer the question from 14 to 17 on the basis of these configuration. {:(A,1s^(2),2s^(2),2p^(6),,),(B,1s^(2),2s^(2),2p^(6),3s^(2),3p^(3)),(C,1s^(2),2s^(2),2p^(6),3s^(2),3p^(5)):} The molecular formula of the compound formed from B and C will be

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Increasing order of Electron affinity for following configuration. (a) 1s^(2),2s^(2),2p^(2) (b) 1s^(2), 2s^(2) 2p^(4) (c) 1s^(2), 2s^(2), 2p^(6),3s^(2), 3p^(4) (d) 1s^(2), 2s^(2), 2p^(6), 3s^(2), 3p^(3)

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