Question

Which one is the wrong statement ?

• 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 an d 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

Answer 1

Answer: (C)

The energy of 2s orbital is less than the energy of 2p orbital in case of Hydrogen like atoms

Answer 2

Energy of $2s$-orbital and $2 p$ -orbital in case of hydrogen like atoms is equal.