Electronic configuration of elements nbsp-P- Q- R and S are given below- P - -2- 2- Q - -2- 8- 2- R - -2- 8- 5- S - -2- 5- Which of the following options is correct-P and Q belong to nbsp-second period and R and S belong to third nbsp-period-P and R belong to second period and Q and S belong to third nbsp-period-P and S belong to second period and R and Q belong to third period-S and Q belong to second period and R and P belong to third period-

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Electronic Configuration of Elements

Electronic co...

Question

Electronic configuration of elements P, Q, R and S are given below:
P - (2, 2)
Q - (2, 8, 2)
R - (2, 8, 5)
S - (2, 5)
Which of the following options is correct?

P and Q belong to second period and R and S belong to third period.

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P and R belong to second period and Q and S belong to third period.

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S and Q belong to second period and R and P belong to third period.

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P and S belong to second period and R and Q belong to third period.

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