How many unpaired electrons present in 4f-orbital of lutetium ?
How many unpaired electrons present in 4f-orbital of lutetium ?
A. 1
B. 2
C. 0
D. 4
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Correct Answer - C
We know that Ltetium has atomic number 71 and electronic configuration `6s^(2), 4f^(14), 5d^(0)`
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