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

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Periods

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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There are four elements P, Q, R and S with their electronic configuration given in the options. Which of these elements belong to the same group?

_{8}^{16} P,_{9}^{19} Q,_{10}^{20} R a n d_{11}^{23} S

A

A

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