In an atom, the total number of electrons with quantum numbers n=5,l=2,ands=−12
A
5
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B
10
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C
3
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D
4
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Solution
The correct option is A
5 n=5,l=2,ands=−12
The above quantum numbers is the description of 5d subshell with spin s=−12. Number of orbitals in a d subshell with l = 2 is 2l+1 = 2×2+1 = 5.
Total number of electrons possible since each orbital can have maximum of 2 electrons = 10 number of electrons with spin s=−12 is 5 The other 5 electrons will have the spin s=+12