NEET Solved Paper 2017 Question 17

Question: Which one is the wrong statement?

Options:

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

B) de-Broglie’s wavelength is given by $ \lambda =\frac{h}{mv}, $ where m = mass of the particle, v = group velocity of the particle

C) The uncertainty principle is $ \Delta E\times \Delta t\ge \frac{h}{4\pi } $

D) Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement

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Answer:

Correct Answer: A

Solution:

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