Select correct statement : (a) The lower the value of \( (n+l) \) for an orbital, the higher is ...

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Select correct statement :
(a) The lower the value of \( (n+l) \) for an orbital, the higher is its energy.
(b) If two orbitals have the same value of \( (n+l) \), the orbital with higher value of \( n \) will have lower energy.
(c) The energy of an electron in a multi-electron atom depends on quantum number \( n \) only
(d) The energy of an electron in hydrogen atom depends on quantum number \( n \) only
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