Which of the following electronic configuration is incorrect-P nbsp- - 1s-2 nbsp-2s-2 2p-6 3s-2 3p-6 4s-1Q - nbsp-1s-2 nbsp-2s-2 2p-6 3s-2 3p-6 nbsp-4s-2 3d-1R nbsp- nbsp-1s-2 nbsp-2s-2 2p-6 3s-2 3p-3 nbsp-3d-5S - nbsp-1s-2 nbsp-2s-2 2p-6 3s-23p-6 4s-23d-6

The correct option is C R nbsp;= nbsp;1s^2 nbsp;2s^2 2p^6 3s^2 3p^3 nbsp;3d^5The electrons are filled in the order of subshells with lower energy to th ...

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Standard VIII

Chemistry

Modern Periodic Table

Which of the ...

Question

Which of the following electronic configuration is incorrect?

P =

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1}

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Q =

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{1}

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R =

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3} 3 d^{5}

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S =

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{6}

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Solution

The correct option is C R = $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3} 3 d^{5}$
The electrons are filled in the order of subshells with lower energy to those of higher energy.

Therefore, the electronic configuration of R is wrong because only after 6 electrons fill the 3p subshell, the 4s and 3d subshell will be filled.

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Which of the following electronic configuration is incorrect?

The correct option is C R = 1s22s22p63s23p33d5The electrons are filled in the order of subshells with lower energy to those of higher energy. Therefore, the electronic configuration of R is wrong because only after 6 electrons fill the 3p subshell, the 4s and 3d subshell will be filled.