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Empirical & Molecular Formula

Which element...

Question

Which element has three shells with $5$ electrons in its valence shell?

A

Nitrogen

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B

Silicon

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C

Phosphorous

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D

Sulphur

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Solution

The correct option is C Phosphorous
The electronic configuration of phosphorous is $2, 8, 5$ .
Thus it has three shells and $5$ electrons in its outermost shell.
Hence, option C is correct.

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