1.

Which of the following pair of electrons is excluded from an atom ?

Answer»

`n=2, l=0, m=0, s=+(.^(1)//_(2))` and `n=2, l=0, m=0, s=+(.^(1)//_(2))`
`n=2, l=1, m=+1, s=+(.^(1)//_(2))` and `n=2, l=1, m=-1, s=+(.^(1)//_(2))``
`n=1, l=0, m=0, s=+(.^(1)//_(2))` and `n=1, l=0, m=0, s=-(.^(1)//._(2))`
`n=3, l=2, m=-2, s=+(`^(1)//_(2))`` and `n=3, l=0, m=0, s=+(`^(1)//_(2))``

ANSWER :A


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