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What happens when an electron jumps from...

What happens when an electron jumps from a lower energy level to a higher energy level?

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(1) As long as an electron revolves in a particular orbit , the electron does not lose its energy Therefore, these orbits are called stationary orbits and the electrons are said to be in station-ary energy state (2) Each orbit or shell is associated with a definite amount of energy . Hence , these are also called energy levels An electron jumps from a lower energy level to a higher energy level , by absorting energy . It jumps from a higher energy to a lower level by emmitting energy in the form of electromagnetic radiation Electrons move around the nucels in specified circular paths called orbits or shells or energy levels and are designated as K,L,M and N shells respectively Arrange the above postulates of Bohr's theory in a correct sequence

The postulates of Bohr's atomic model are given below. Arrange them in the correct sequence : (1) As long the electron revolves in a particular orbit, the electron does not lose its energy. Therefore, these orbits are called stationary orbits and the electrons are said to be in stationary energy states. (2) Electrons revolve round the nucleus in specified circualr paths called orbits or shells. (3) The energy associated with a certain energy level increases with the increase of its distance from the nucleus. (4) An electron jumps form a lower energy level to a higher energy level by absorbing energy. But when it jumps from a higher to lower energy level, energy is emitted in the form of electromagnetic radiation. (5) Each orbit or sheel is associated with a definite amount of energy. Hence, these are also called energy levels and are designated as K,L,M and N, respectively.

Knowledge Check

  • When an electron drops from a higher energy level to a low energy level, then

    A
    Energy is emitted
    B
    Energy is absorbed
    C
    Atomic number increases
    D
    Atomic number decreases
  • If the electron jumps from 7.00 eV energy level to 5.0 eV energy level it

    A
    absrobs 2.0 e v kinetic energy
    B
    abosrbs 2.0 v potential energy
    C
    emits 2.0 eV electrical energy
    D
    emits 2.0 eV photon
  • If Delta E is the energy emitted in electron vots when an electronic transition occurs from higher energy level to a lower energy level in H-atom, the wavelength of the line produced is approximately equal to

    A
    `(19800)/(DeltaE) Å`
    B
    `(12375)/(DeltaE) Å`
    C
    `(13600)/(Delta E) Å`
    D
    `(21800)/(Delta E) Å`
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