Which of the following electronic configuration is that of a transitio – InterviewSolution

InterviewSolution

1.	Which of the following electronic configuration is that of a transitional element?A. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6`B. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^1`C. `1s^2 2s^2 2p^6 3s^2 3p^6 4s^2`D. `1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^9`
Answer» Correct Answer - D `4s^2 3d^9` - last `e^-` enters d orbital `therefore` d-block

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