MHT CET 2022 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties MHT CET 2022

Identify the element is it's observed and expected electronic configuration remains same as [Ar]

(A)Co
(B)Ti
(C)ScCorrect
(D)V

Answer: (C)

Solution

The configuration has 3 electrons outside argon, so it corresponds to scandium (Z = 21), which follows the normal Aufbau filling with no exception. Hence (C). Titanium is

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Question ID VK-094428