JEE PHYSICS MCQ: ATOMS

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On the basis of Bohr’s atomic model the radius of 3rd orbit of any atom is

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Correct option: B

Nine times of radius of first orbit

Option B is correct because according to Bohr's model, the radius of the nth orbit is proportional to

n^2

, so the radius of the 3rd orbit is nine times the radius of the first orbit.

More Questions from ATOMS

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The de-Broglie wavelength of an electron in the first Bohr orbit is The volume occupied by an atom is greater than the volume of the nucleus by a factor of about For a hydrogen atom, when electron jump from

n

=2

{n}=1

, then wave length of radiation emitted found to be

\lambda_0

. Then, for which transition of electron of a 'He' atom, the wavelength of radiation emitted will be equal to '

\lambda_0

'. Energy of characteristic X-ray is a consequence of Taking Rydberg’s constant

{R_H} = 1.097\,\, \times \,\,{10^7}\,\,m

, first and second wavelength of Balmer series in hydrogen spectrum is When hydrogen atom is in its first excited level, its radius is its ground state radius