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Structure of Atom question

2017 · Q84
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Structure of Atom question

2017 · Q84

NEETChemistryStructure of AtomMCQ+4 / −1
Which one is the wrong statement ?
  1. A
    The uncertainty principle is

    ΔE×Δt≥h4π\Delta E \times \Delta t \ge {h \over {4\pi }}ΔE×Δt≥4πh​
  2. B
    Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
  3. C
    The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
  4. D
    de-Broglie's wavelength is given by

    λ=hmv\lambda = {h \over {mv}}λ=mvh​, where m = mass of the particle,

    v === group velocity of the particle.
View written solutionFree

Correct answer: C

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.

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