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

  • Option 1)

    3s orbital is lower in energy than 3p orbital

  • Option 2)

    3p orbital is lower in energy than 3d orbital

  • Option 3)

    3s and 3p orbital is lower in energy than 3d orbital

  • Option 4)

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

 

Answers (2)

As we learnt in 

Total energy of elctron in nth orbit -

E_{n}= -13.6\: \frac{z^{2}}{n^{2}}eV

Where z is atomic number

-

Energy of orbital of Hydrogen atom only depends on value of n.

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

For hydrogen the energy order of orbital is

1s< 2s= 2p< 3s= 3p= 3d< 4s= 4p= 4d= 4f


Option 1)

3s orbital is lower in energy than 3p orbital

Incorrect Option

Option 2)

3p orbital is lower in energy than 3d orbital

Incorrect Option

Option 3)

3s and 3p orbital is lower in energy than 3d orbital

Incorrect Option

Option 4)

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

Correct Option

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