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The ratio, of the radii of the first thr...

The ratio, of the radii of the first three Bohr orbit in H atom is

A

`1:1//2:1//3`

B

`1:2:3`

C

`1:4:9`

D

`1:8:27.

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Knowledge Check

  • The energy of an electron in the first Bohr orbit of H-atom is -13.6 eV. Then, which of the following statement(s) is/are correct for He^(+) -

    A
    energy of electron in second Bohr orbit is -13.6eV
    B
    kinetic energy of electron in the first orbit is 54.46eV
    C
    kinetic energy of electron in second orbit is 13.6eV
    D
    speed of an electron in the second orbit is `2.19xx10^(6)m*s^(-1)`.

  • According to Bohr's model , the ratio of the energies of the electron in the first orbit of hydrogen atom and He^(+) atom is

    A
    `1:2`
    B
    `4:1`
    C
    `1:4`
    D
    `1:9`

  • The ratio between the radii of the fourth and the second electron orbits of a hydrogen atom is

    A
    `2:1`
    B
    `4:1`
    C
    `8:1`
    D
    `16:1`

    • Similar Questions

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    The energy of an electron in the first Bohr orbit of H atom is -13.6 eV the possible energy value of the first excited state for electron in Bohr orbits of hydrogen is

    If the radius of first Bohr orbits of Hydrogen atom is 0.5overset@A , Find the radius of the fourth Bohr Orbit of the atom.

    If the radius of the first Bohr orbit is r, what would be the radius of the second ?

    If the radius of 2nd Bohr orbit of H-atom is r_2 the radius of third Bohr orbit of H-atom?

    The radius of the first bohr orbit of hydrogen atom is 0.529 overset0A . The rdius of the third orbit of H^+ will be

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