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Q.

The number of valence electrons in Se

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a

7

b

8

c

6

d

5

answer is B.

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Detailed Solution

The electrons present in the outermost shell of an atom are called valency electrons.

The number of valency electrons in Se = outermost electrons in s and p are 2 + 4 =6

Hence, The number of valence electrons in Se = 6

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