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Atomic Number

The atomic nu...

Question

The atomic number of phosphorus is 15. Its valency will be _______.

A

2

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B

4

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C

3

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D

1

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Solution

The correct option is C 3

The atomic number of phosphorus is 15.

Electronic configuration of phosphorus = 2,8,5

Phosphorus accepts 3 electrons to achieve the nearest noble gas configuration.

Hence, phosphorus has a valency 3.

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