Classification of Elements and Periodicity in Properties

Classification of Elements and Periodicity in Properties

Question

Which of the following statements in relation to the hydrogen atom is correct?

  • 3s orbital is lower in energy than 3p orbital

  • 3p orbital is lower in energy than 3d orbital

  • 3s and 3p orbitals are of lower energy than 3d orbital

  • 3s, 3p and 3d orbitals all have the same energy

Answer

D.

3s, 3p and 3d orbitals all have the same energy

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