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LoginElectronic configurations of elements P, Q, R and S are given below :
P: 2,8,1; Q: 2,5 R: 2, 8,7: S: 2,8,5
Which of the following statements are correct?
I. Elements Q and S belong to the same period of the periodic table.
II. P is an alkali metal.
III. R is a metal.
lV. Valency of element S is 3.
(A) I and II only
(B) II and IV only
(C) I and III only
(D) All of these
General Awareness General QA 2 years ago
Correct option (B) II and IV only
Explanation:
P (2, 8, 1) : group 1, alkali metal
Q (2,5): period 2, Group 15, valency 3
R (2,8,7): period 3, group 17, valency 1 , non-metal
S (2, 8, 5) period 3, group 15, valency 3, non-metal
Posted on 06 Oct 2022, this text provides information on General Awareness related to General QA. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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