(D) In a hydrogen atom,the energy of an orbital depends only on the principal quantum number $(n)$.Since all the given orbitals ($3s$,$3p$,and $3d$) h

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All $3s$,$3p$,and $3d$ orbitals have the same energy.

(D) In a hydrogen atom,the energy of an orbital depends only on the principal quantum number $(n)$.Since all the given orbitals ($3s$,$3p$,and $3d$) have the same principal quantum number $(n = 3)$,they are degenerate,meaning they possess the same energy.Therefore,the correct statement is that all $3s$,$3p$,and $3d$ orbitals have the same energy.

Class 11 Chemistry Structure of Atom Quantum number, Electronic configuration and Shape of orbitals

Medium

Which statement is true regarding the hydrogen atom?

A
The energy of the $3d$-orbital is lower than the energy of the $3p$-orbital.
B
The energy of the $3p$-orbital is lower than the energy of the $3d$-orbital.
C
The energy of $3s$ and $3p$-orbitals is lower than the energy of the $3d$-orbital.
D
All $3s$,$3p$,and $3d$ orbitals have the same energy.