Q.

Electron in an atom is characterized by four quantum numbers. Number of electrons with  l=0  in  Cr (Z= 24) atom are

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a

6

b

5

c

8

d

7

answer is D.

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Detailed Solution

l=0 means s-subshell.Cr- 1s22s22p63s23p64s13d5.Number of s- electrons = 7
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Electron in an atom is characterized by four quantum numbers. Number of electrons with  l=0  in  Cr (Z= 24) atom are