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06-01-2020
Chemistry

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How many unpaired electrons are contained in each element: (a) chlorine, (b) selenium, (c) cesium, and (d) phosphorus?

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pstnonsonjoku pstnonsonjoku

07-01-2020

Answer:Se-2, Cl-1, Cs-1, P-1

Explanation:

Let us consider the groups the elements belong to

Se- group 16, ns2np4- two unpaired valence electrons

Cl- group 17, ns2np5- 1 unpaired electron

Cs-group 1, ns1- one unpaired electron

P-group 15- ns2np3- three unpaired valence electrons

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