Anish
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Class 12
PHYSICS
ATOMIC PHYSICS
The ionization energy of a hydrogen like bohr atom is 4 Rydbergs (i) What is the wavelength of the radiation emitted when the electron jumps from the first excited state to the ground state ?(ii) what is the radius of the orbit for this atom ?
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Updated On: 21-5-2020
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Solution
The energy of the electron in hydrogen-like atom in nth orbit is
We have
rydberg.
The ionization energy
a. The energy required to excite the electron from
to
is given by
If
is the wavelength of radiation emitted , then
, i.e.
b. Radius of first Bohr orbit
2.5 xx 10^(-11) m