MHT CET 2024 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2024

What group element from following achieves noble gas configuration after gaining two electrons

(A)Group - 14
(B)Group - 15
(C)Group - 16Correct
(D)Group - 13

Answer: (C)

Solution

An atom reaches a noble gas configuration () by gaining the number of electrons equal to (number of valence electrons). Group 16 elements have , so they need exactly two more electrons to complete the octet (e.g.

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Question ID VK-095460