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If overline(X) ion has 10 neutrons and 9...

If `overline(X)` ion has 10 neutrons and 9 protons , then the electronic configuration of the atom of the element x is

A

2,8,1

B

2,7

C

2,8

D

2,8,8

Text Solution

Verified by Experts

The correct Answer is:
b
`X^(-)` possess 9 protons (Z), 10 neutrons and 10 electrons.

Therefore, the electronic configuration of an atom is 2, 7.
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