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Introduction to d and f Block Elements

Calculate the...

Question

Calculate the number of electron present in valence shell of W.

A

2

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B

3

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C

4

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D

5

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Solution

The correct option is D $4$
It has 4 d-electron as

Tungsten74 $[X e] 6 s^{2} 4 f^{14} 5 d^{4}$

Hence, the correct option is $C$

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