JEE PHYSICS MCQ: ATOMS

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The value of series limit in the case of paschen series is:

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Correct option: C

822 nm

Option C (822 nm) is correct because the series limit for the Paschen series is calculated using the Rydberg formula with n1=3 and n2=infinity.

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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

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{n}=1

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\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