Element $A$ has electronic configuration 2,8,1 and $B$ has 2,8,7. Which one will have higher electron affinity?

A

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B

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Both

A

and

B

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None of the above

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Solution

The correct option is A $B$
B has $7$ electrons in the outermost shell so it tends to accept one to complete the octet. Also, A has $1$ electron in the outermost shell, so it tends to donate to complete octet. Thus B has a higher affinity towards electrons.

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Similar questions

A

B

C

D

A

2, 8, 1

2, 8, 2

(a) 2, 8, 2
(b) 2, 8, 1
(c) 2, 8, 7
(d) 2, 1

Study the reaction given below and write the electronic configuration of $C l^{-}$ when Cl is 2, 8, 7.

$C l + e^{-} \to C l^{-}$

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