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Atomic Energy Levels

An energy of ...

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An energy of 68.0 eV is required to excite a hydrogen like atom from its second Bohr orbit to third. The nuclear charge is Ze. Given that $e = 1.6 \times 10^{- 19} C, m = 9.1 \times 10^{- 31} k g, ε_{0}^{- 1} = 36 π \times 10^{9} V m / A - s, h = 6.6 \times 10^{- 34} J - s, c = 3 \times 10^{8} m / s .$

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Q. An energy of 68 eV is required to excite a hydrogen-like atom from its second Bohr orbit to the third. The nuclear charge is Ze. The value of Z is:

Q. The energy required to transfer an electron from second Bohr orbit to third Bohr orbit in a hydrogen like atom with nuclear charge

Z e

68.0 e V .

Z

Q. An energy of

68.0 e V

is required to excite a hydrogen-like atom in its second Bohr energy level to third energy level the charge of nucleus is

Z e

. The wavelength of a radiation required to eject the electron from first orbit to infinity is

Q. __________ is the wavelength of photon of energy

35

h = 6.625 \times 10^{- 34}

c = 3 \times 10^{8}

1

= 1.6 \times 10^{- 19}

Q. Calculate the radius of second Bohr orbit in hydrogen atom from the given data.
Mass of electron=

9.1 \times 10^{- 31} K g

Charge on the electron

= 1.6 \times 10^{- 19} C

Planck's constant=

6.63 \times 10^{- 34} J - s

Permitivitty of free space =

8.85 \times 10^{- 12} C^{2} / N m^{2}

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