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Question

Chemistry Question on Electronic Configurations Of Elements And The Periodic Table

The stable electronic configuration of chromium is

A

3d6,4s1 3d^{6},4s^{1}

B

3d5,4s2 3d^{5},4s^{2}

C

3d5,4s1 3d^{5},4s^{1}

D

3d6,4s0 3d^{6},4s^{0}

Answer

3d5,4s1 3d^{5},4s^{1}

Explanation

Solution

Cr(24)=1s2,2s22p6,3s23p63d5,4s1C r(24)=1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{5}, 4 s^{1} So, stable electronic configuration is 3d5,4s13 d^{5}, 4 s^{1}