1.

For which one of the following sets of four quantum numbers, an electron will have the highest energy?

Answer»

`{:(,N,l,m,s),("(a)",3,2,1,1//2):}`
`{:(,n,l,m,s),("(b)",4,2,-1,1//2):}`
`{:(,n,l,m,s),("(c)",4,1,0,1//2):}`
`{:(,n,l,m,s),("(d)",5,0,0,-1//2):}`

SOLUTION :The sub-shell are 3d, 4d, 4p and 4s, 4d has HIGHEST energy as n + I VALUE is maximum for this.


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