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Electron Distribution in Different Orbits

The mass numb...

Question

The mass number of an element is 16. If it has 8 neutrons then valence shell of this element is.

A

K

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B

L

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C

M

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D

N

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Solution

The correct option is A L
Since mass number $(A) = 16$ and number of neutrons $= 8$
Atomic number $(Z) = 16 - 8 = 8$
Therefore, electronic configuration will be 2,6
Hence, $L$ is the valence shell and there are 6 electrons in it.

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