The energy of electron orbiting in the n th orbit of hydrogen atom is given by the expression E n = - 13 . 6 n 2 e V . Calculate energy liberated when the electron jumps from the second to the first orbit.

Given. The energy of electron in n th orbit = E n = - 13 . 6 n 2 e V The energy liberated, when an electron jumps from one orbit to another is equal to the energy difference between these orbits. Therefe the energy liberated when an electron makes transition between second to first orbit is given by E = - 13 . 6 1 1 2 - 1 2 2 = - 13 . 6 1 1 - 1 4 = 10 . 2 eV

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Calculate the frequency of the photon, which can excite the electron to $- 3.4 eV$ from $- 13.6 eV$ .

Important Questions on Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom

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12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 12

Two energy levels in an atom are separated by

2.3 eV

. What is the frequency of radiation emitted when the atom transits from the upper to the lower level?

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12th ICSE

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ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 13

The energy of an electron in the

n

th state of hydrogen atom is given by

E_{n} = - (\frac{13.6}{n^{2}}) eV

. Calculate the energy and frequency of a photon radiated when the electron de-excites from the first excited state to the ground state. To which spectral series does this photon belong?

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12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 14

The energy of an electron in the first Bohr orbit of hydrogen atom is

- 22 \times 10^{- 19} J

. Calculate the frequency of the light emitted when the electron makes a transition from second orbit to first orbit.

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12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 15

The energy of the lowest level of hydrogen atom is

- 13.6 eV

. Calculate the energy, frequency and wavelength of the photon emitted by transition from

n = 4

n = 2

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12th ICSE

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ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 16

The ionisation-potential of hydrogen atom is

13.6 V

. Find out wavelength of

H_{β}

line of Balmer series.

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12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 16

The ionisation-potential of hydrogenatom is

13.6 V

. Find out shortest wavelength of Lyman series.

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12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 17

Calculate the wavelength of the

H_{α}

line of hydrogen spectrum. The energy levels of hydrogen atom are given by the expression

E_{n} = - (\frac{13.6}{n^{2}}) eV

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12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 13 - Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom>QUESTIONS>Q 18

The energy of electron orbiting in the

n

th orbit of hydrogen atom is given by the expression

E_{n} = - (\frac{13.6}{n^{2}}) e V

. Calculate energy liberated when the electron jumps from the second to the first orbit.

Calculate the frequency of the photon, which can excite the electron to -3.4 eV from -13.6 eV.

Important Questions on Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom

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Calculate the frequency of the photon, which can excite the electron to $- 3.4 eV$ from $- 13.6 eV$ .