Which of the following electron configurations corresponds to a transition element?

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

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

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

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1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2} 4 p^{1}

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Solution

The correct option is B $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{2} 4 s^{2}$
Titanium or $T i$ is a transition element. It occupies group 4 in the Periodic table.
It has an electronic configuration of $1 s^{2}$ $2 s^{2}$ $2 p^{6}$ $3 s^{2}$ $3 p^{6}$ $3 d^{2}$ $4 s^{2}$
Thus, option C is the correct answer.

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

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

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