(C) For hydrogen-like atoms (single-electron species),the energy of orbitals depends only on the principal quantum number $n$. Therefore,the energy of

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The energy of $2s$ orbital is less than the energy of $2p$ orbital in case of hydrogen-like atoms.

(C) For hydrogen-like atoms (single-electron species),the energy of orbitals depends only on the principal quantum number $n$. Therefore,the energy of $2s$ orbital is equal to the energy of $2p$ orbital $(E_{2s} = E_{2p})$. Thus,the statement that the energy of $2s$ orbital is less than $2p$ orbital is incorrect.

Class 11 Chemistry Structure of Atom Mix Examples-Structure of atom

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Which one is the wrong statement?

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A
The uncertainty principle is $\Delta E \times \Delta t \geq \frac{h}{4\pi}$
B
Half-filled and fully-filled orbitals have greater stability due to greater exchange energy,greater symmetry,and more balanced arrangement.
C
The energy of $2s$ orbital is less than the energy of $2p$ orbital in case of hydrogen-like atoms.
D
de-Broglie's wavelength is given by $\lambda = \frac{h}{mv}$,where $m =$ mass of the particle,$v =$ group velocity of the particle.