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Multi-Electron Configurations and Orbital Diagrams

The electroni...

Question

The electronic configuration of $S c$ is:

A

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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B

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

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C

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

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D

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

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Solution

The correct option is A $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{1}$
Scandium has an atomic number of 21.
Hence, the electronic configuration of $S c$ = $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{1}$

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Multi-Electron Configurations and Orbital Diagrams

Standard XII Chemistry

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