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Which of the following sets of quantum n...

Which of the following sets of quantum number for orbitals in hydrogen atom has a greater energy of electrons ?
a. `n = 3,l = 2,m = +1` b. `n = 3,l = 2,` and `m = -1`

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The correct Answer is:
A
Bohr sets represent `3d` sub-levels whose each d orbital has the same energy i.e. d orbital are degenerate Therefore both a and b are equal in energy
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