JEE Advanced Chemistry question

Statement 1: Helium and beryllium have similar outer electronic configuration of the type ns2 Statement 2: Helium and beryllium both are chemically inert

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is FalseCorrect
(D)Assertion is False, Reason is True

Answer: (C)

Solution

Helium's configuration, 1s2, and beryllium's configuration, [He]2s2, do both show the general outer "ns2" pattern, making Statement 1 true. Statement 2, however, is false: while helium (a noble gas with a fully stable closed shell) is indeed chemically inert, beryllium is a genuinely

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Question ID VK-159297