JEE PHYSICS MCQ: ATOMS

1 Medium

1 of 1

Application +4 | -1

\mathrm{N}^{\text {th }}

level of

\mathrm{Li}^{2+}

has the same energy as the ground state energy of the hydrogen atom. If

r_N

and

r_1

is the radii of the

\mathrm{N}^{\text {th }}

Bohr orbit of

\mathrm{Li}^{2+}

and

\mathrm{H}

atom respectively, then the ratio

r_N / r_1

View answer and explanation

Correct option: C

Option C (3) is correct because the energy of the Nth level of Li2+ equals the ground state energy of hydrogen when n=3, and the ratio r_N/r_1 is then 3.

More Questions from ATOMS

Practice All Chapter MCQs →

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