Electronic configurations of elements P, Q, R, and S are given below.

1.	Electronic configurations of elements P, Q, R, and S are given below. (These are not actual symbols).P – 2, 2 Q -2, 8, 2 R – 2, 8, 5 S – 2, 8 a) Which among these elements are included in the same period? b) Which are those included in the same group? c) Which among them is a noble gas? d) To which group and period does the element R belong?
Answer» a) P and S, Q and R – belongs to same period b) P and Q, belongs to same group c) S d) R belongs to 3rd period and 15^th group

Electronic configurations of elements P, Q, R, and S are given below. (These are not actual symbols).P – 2, 2 Q -2, 8, 2 R – 2, 8, 5 S – 2, 8 a) Which among these elements are included in the same period? b) Which are those included in the same group? c) Which among them is a noble gas? d) To which group and period does the element R belong?

Answer»

a) P and S, Q and R – belongs to same period

b) P and Q, belongs to same group

c) S

d) R belongs to 3rd period and 15^th group

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