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  • The order of increasing electron affinity of the electronic configurations: 1)  2)<img

The order of increasing electron affinity of the electronic configurations:

1)1s^22s^22p^63s^23p^5 

2)1s^22s^22p^3

3)1s^22s^22p^5

4)1s^22s^22p^63s^1

Option: 1

2<4<3<1


Option: 2

1<2<3<4


Option: 3

1<3<2<4


Option: 4

4<3<2<1


Answers (1)

best_answer

Configuration 1) and 3) refer to halogens Cl and F respectively. they have a high value of electron affinity.

Configuration 2) refers to a stable half-filled electronic configuration that has no tendency to accept an additional electron.

Configuration 4) refers to alkali metals which are electropositive &  have less tendency to accept electrons.

From above 

 half-filled electronic configuration < alkali metals <  halogens

order of electron gain enthapy

-349 (Cl) < -328 (F) < alkali < half filled

order of electron affinity (reverse of EGE)

-349 (Cl) > -328 (F) > alkali > half filled

order will be

2<4<3<1

Posted by

Irshad Anwar

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