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Q.

 If Z = 8, what would be the number of valence electrons of that element? 

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a

7

b

6

c

3

d

4

answer is B.

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Detailed Solution

The atomic number is denoted by Z. 
Z = 8, 
Electronic configuration = 2,6
This element has 6 electrons in the outermost orbit which are the valence electrons.

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