Which of the following statements, in relation to the hydrogen atom, is correct?
3s and 3p orbitals are of lower energy than 3d orbital.
All 3s, 3p and 3d orbitals have the same energy.
3s orbital is lower in energy than 3p orbital.
3p orbital is lower in energy than 3d orbitals.
A
3s and 3p orbitals are of lower energy than 3d orbital.
B
3s orbital is lower in energy than 3p orbital.
C
All 3s, 3p and 3d orbitals have the same energy.
D
3p orbital is lower in energy than 3d orbitals.
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Solution
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A hydrogen atom has only one electron, that experiences no shielding from other electrons, and therefore its energy level only depends on its distance away from the nucleus, which is dependent on its value of (n).
Therefore, the orbitals of a hydrogen atom increase energy as follows:
1s<2s=2p<3s=3p=3d<4s=4p=4d=4f<.....
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