Valence shell electronic configuration of Barium is:

5 s^{2}

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6 s^{2}

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5 s^{1}

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6 s^{1}

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Solution

The correct option is B $6 s^{2}$
Barium belongs to the sixth period. Its electronic configuration is $[X e] 6 s^{2}$ where $[X e]$ represents the inert core of xenon gas and $6 s^{2}$ represents the valence shell electronic configuration of barium.
Hence, the correct option is B.

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Similar questions

6 s^{2}

The valence shell electronic configuration of group 18 element is:

(i) [X e] {6 s}^{1}

(i i) [X e] {4 f}^{14}, {5 d}^{1} {6 s}^{2}

(i i i) [A r] {4 s}^{2} {4 p}^{3}

(i v) [A r] {3 d}^{7}, {4 s}^{2}

C u

C r^{2 +}

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