Q1 / 160 · AP EAMCET 2023 (18 May Shift 2) · Chemistry

In which of the following, orbitals are correctly arranged in the increasing order of their energies?

  • A
    4 f $ < 5$ p $ < 5$ d $ < 6$ s
  • B
    5 p $ < 4$ f $ < 6$ s $ < 5$ d
  • Correct answer
    C
    5 p $ < 6$ s $ < 4$ f $ < 5$ d
  • D
    5 p $ < 5$ d $ < 4$ f $ < 6$ s

Solution

For multielectron atoms, the energy of the orbitals increases with an increase in their $(\mathrm{n}+l)$ value. Thus, the order will be :- $$ 5 \mathrm{p} < 6 \mathrm{~s} < 4 \mathrm{f} < 5 \mathrm{~d} $$

Hence, the correct answer is option: 'C'.

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