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The minimum energy required to remove an...

The minimum energy required to remove an electron is called

A

Stopping potential

B

Binding energy

C

Work function

D

None of these.

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The minimum energy required to excite H_2 atom from tis ground state is

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 Å (a) Estimate the potential energy of the system in eV, taking the zero of the potential energy at infinite separation of the electron from proton. (b) What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained in (a)? (c) What are the answers to (a) and (b) above if the zero of potential energy is taken at 1.06 Å separation?

Knowledge Check

  • Loss of electron is called

    A
    Reduction
    B
    Oxidation
    C
    Can be oxidation or reduction
    D
    None of these

  • The ionisation energy of an electron in the ground state of helium atom is 24.6V. The energy required to remove both the electron is :

    A
    51.8eV
    B
    79eV
    C
    38.2eV
    D
    49.2eV

  • The ionisation energy of an electron in the ground state of helium atom is 24.6eV. The energy required to remove both the electron is

    A
    51.8eV
    B
    79 eV
    C
    38.2 eV
    D
    49.2eV

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