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Question: Answered & Verified by Expert
In which of the following, orbitals are correctly arranged in the increasing order of their energies?
ChemistryChemical Bonding and Molecular StructureAP EAMCETAP EAMCET 2023 (18 May Shift 2)
Options:
  • A 4 f $ < 5$ p $ < 5$ d $ < 6$ s
  • B 5 p $ < 4$ f $ < 6$ s $ < 5$ d
  • C 5 p $ < 6$ s $ < 4$ f $ < 5$ d
  • D 5 p $ < 5$ d $ < 4$ f $ < 6$ s
Solution:
1557 Upvotes Verified Answer
The correct answer is: 5 p $ < 6$ s $ < 4$ f $ < 5$ d
For multielectron atoms, the energy of the orbitals increases with an increase in their $(\mathrm{n}+l)$ value.
Thus, the order will be :-
$$
5 \mathrm{p} < 6 \mathrm{~s} < 4 \mathrm{f} < 5 \mathrm{~d}
$$

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