JEE PHYSICS MCQ: ATOMS

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Statement-I: Bohr's third postulate state that the stationary orbits are these for which the angular momentum is same integral multiple of

\frac{h}{2 \pi}

.

Statement-II: Linear momentum of the electron in the atom is quantized.

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Correct option: C

Statement-I is true and Statement-II is false

Option C is correct because Bohr's third postulate correctly states the quantization of angular momentum, but the linear momentum is not directly quantized in the same way.

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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

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{n}=1

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\lambda_0

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\lambda_0

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{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