1.

Which of the following electronic configuration belongs to a transition element ?

Answer»

KL `3s^2p^6d^5, 4S^1`
KL `3s^2p^6d^10, 4s^(2)4p^3`
KL `3s^2p^6d^10, 4s^(2)4p^3`
KLM `4s^2p^6d^10, 5S^(2)5p^1`

Answer :A


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