If the atomic number of an element is $33$ , it will be placed in the periodic table in the:

First group

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Third group

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Fifteenth group

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Seventeenth group

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Solution

The correct option is C Fifteenth group
Electronic configuration of an element with $Z = 33$ is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{3}$ . Hence, it lies in $15^{t h}$ group.

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