NEET2017Chemistry-Atomic Structure
NEET 2017 Chemistry Quantum Mechanics MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which one is the WRONG statement?
A
de-Broglie's wavelength is given by λ = h/mv where m = mass of the particle, v = group velocity of the particle.
B
The uncertainty principle is ΔE × Δt ≥ h/4π
C
Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
D
The energy of 2s orbital is less than the energy of 2p orbital in case of hydrogen like atoms.
Correct Answer
Option D
Detailed Explanation
In hydrogen-like atoms, the energy of an orbital depends only on the principal quantum number n, so 2s and 2p orbitals have the same energy.
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