The energy of an electron of 2p_y orbital is | vedclass

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(D) The energy of an electron in a hydrogen-like atom depends on the principal quantum number $n$. For multi-electron atoms,it depends on the $(n + l)

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Same as that of $2p_z$ orbital

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(D) The energy of an electron in a hydrogen-like atom depends on the principal quantum number $n$. For multi-electron atoms,it depends on the $(n + l)$ value.For $2p_x$,$2p_y$,and $2p_z$ orbitals,the principal quantum number $n = 2$ and the azimuthal quantum number $l = 1$.Since they have the same $(n + l)$ value $(2 + 1 = 3)$,they possess the same energy.Such orbitals are known as degenerate orbitals.

The energy of an electron of $2p_y$ orbital is

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