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A : Uncertainty principle demands that a...

A : Uncertainty principle demands that an electron confined to a nucleus must have very high energy so that the electron cannot reside in a nucleus.
R: The electrostatic attraction between electron and proton is large at such a small distance but is not enough to bind such a high -energy electron.

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Knowledge Check

  • The electrostatic potential energy between proton and electron separated by a distance 1 Å is

    A
    13.6 eV
    B
    27.2 eV
    C
    `-14.4 eV`
    D
    1.44 eV

  • The element having very high ionization energy but zero electron affinity is

    A
    H
    B
    F
    C
    He
    D
    B

  • When the atomic electron is at infinite distance from the nucleus, its energy is

    A
    infinity
    B
    zero
    C
    negative
    D
    positive

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    On the basis of uncertainty principle show that an electron cannot exist with in atomic nucleus. (Given : Nuclear radius = 10^(-15) m)

    Energy of an electron increases with increase in distance from the nucleus. Comment on the change in kinetic energy and potential energy.

    Employing the uncertainty principle, estimate the minimum kinetic energy of an electron confined within a region whose sizes is l=0.20nm .

    A photon , an electron and a uranium nucleus all have the same wavelength . The one with the most energy

    In a hypothetical concept, electron of mass m_(e) revolves around nucleus due to gravitational force of attraction between electron and proton of mass m_(p) . If the radius of circular path of electron is r, then the speed of electron is

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