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Question

Chemistry Question on Classification

Identify the electronic configuration of transition element.

A

1s2, 2s2 2p6, 3s2, 3p6, 4s2 1s^2, \, 2s^2 \, 2p^6, \, 3s^2, \, 3p^6, \, 4s^2

B

1s2, 2s2 2p6, 3s2, 3p6, 3d2, 4s21s^2, \, 2s^2 \, 2p^6, \, 3s^2, \, 3p^6, \, 3d^2, \, 4s^2

C

1s2 2s2 2p6 3s2 3p6 3d10, 4s2 4p21s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6 \, 3d^{ 10}, \, 4s^2 \, 4p^2

D

1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p31s^2, \, 2s^2, \, 2p^6, \, 3s^2, \, 3p^6, \, 3d^{ 10}, \, 4s^2, \, 4p^3

Answer

1s2, 2s2 2p6, 3s2, 3p6, 3d2, 4s21s^2, \, 2s^2 \, 2p^6, \, 3s^2, \, 3p^6, \, 3d^2, \, 4s^2

Explanation

Solution

Transition elements are those elements which have partially filled d-subshells in their elementary form. Therefore, the general electronic configuration of d-block element is (n−1) d1−10 ns1−2( n - 1) \, d^{ 1 - 10 } \, ns^{ 1 - 2}