Which of the following is the electron configuration of a transition metal?

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}

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1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5}

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

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Solution

The correct option is C $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5}$
The transition metals are present in d-block i.e., the last electron enters the d-subshell. Also, they contain unpaired electron in d-subshell. Among given options, this is observed in option C. Hence the element with configuration mentioned in C option is a transition metal. Thus answer is option C.

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Similar questions

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

Which of the following elements belongs to the same group as the element having configuration 1s² 2s² 2p¹

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

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

Y = 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}

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