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Q.

Total number of electrons having n + l = 3 in Cr (24) atom in its ground state is

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a

8

b

10

c

12

d

6

answer is A.

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Detailed Solution

Cr:   1s22s22p63s23p64s13d5n + l = 3so the combinations are 2p, 3s. So 8 electrons.
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