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4 October, 07:52

The atom having the valence shell configuration 3s2 3p3 would be:

A. Group 3A, Period 5

B. Group 5A, Period 3

C. Group 7A, Period 4

D. Group 3A, Period 3

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  1. 4 October, 08:12
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    Answer: - B. Group 5A, period 3.

    Explanations: - From the given electron configuration the element has 5 electrons in outer most shell. It tells us the element is present in group 5A.

    Value of principal quantum number is three which is the number written in front of s and p in the electron configuration and it tells us about the period number. The number is 3 means element is present in period 3.

    So, the right answer is, B. group 5A, period 3.
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