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Question
 Which of the following electronic configuration is that of a transitional element?
Options:
A .   1s2,2s2p6,3s2p6d10,4s2p6
B .  1s2,2s2p6,3s2p6d10,4s2p1
C .  1s2,2s2p6,3s2p6d2,4s2
D .  1s2,2s2p6,3s2p6d6,4s2
Answer: Option C
:
C
d19configuration is transition element.

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