Verified Solution • 2025–26 Session moderate

QNEET-2017-Ch-925: NEET 2017 Chemistry - Class 11 NEET-2017-Ch-925 Solution: Which one is the wrong statement? The uncertainty principle is…

Which one is the wrong statement? The uncertainty principle is ΔE×Δt≥h4π\Delta E \times \Delta t \ge \frac{h}{4\pi} Half filled and fully filled orbitals have greater stability due to greater exchange energy greater symmetry and more balanced arrangement. The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms. de-Broglie's wavelength is given by λ=hmv\lambda = \frac{h}{mv} where m = mass of the particle v = group velocity of the particle.

Multiple Choice Options

  • A The uncertainty principle is ΔE×Δt≥h4π\Delta E \times \Delta t \ge {h \over {4\pi }} _ E _ _ t � 4 � h _
  • 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 λ=hmv\lambda = {h \over {mv}} _ = m v h _ , where m = mass of the particle, v == = group velocity of the particle.

Step-by-Step Verified Solution

In the case of hydrogen type atoms, energy depends on the principal quantum number only. Therefore 2-s orbital will have energy equal to 2-p orbital.

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring