1.

Calculate the minimum and maximum number of electrons which may have magnetic quantum number `m=+1` and spin quantum number `s=-(1)/(2)` in chromium (Cr)A. 0,1B. 1,2C. 4,6D. 2,3

Answer» Correct Answer - D
`[Cr]=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)3d^(5)`
For `pl=1`
`m=+1,0,-1`
For 2p of 3p there are 2e with `s=-(1)/(2)`
for dl=2
m=+1 may have e with `+(1)/(2)` or `-(1)/(2)`
So manimum 2 and maximum 3.


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