Phosphorus has electronic configuration of 2, 8, 5

Which period the element Phosphorus belong to?

3rd period

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1st period

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2nd period

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5th period

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Solution

The correct option is A
3rd period

The electronic configuration shows three electron clouds or energy levels and hence the the period Phosphorus belong to is 3rd.

The energy levels of electron distribution clearly gives away the information of the period the element belongs.

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