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The energy levels of a hypothetical one ...

The energy levels of a hypothetical one electron atom are given by `E_n = -(18.0)/(n^2) eV`
where n = 1,2,3,…. (a) Compute the four lowest energy levels and construct the energy level diagram.
(b) What is the first excitation potential
(c ) What wavelength (Å) can be emitted when these atoms in the ground state are bombarded by
electrons that have been accelerated through a potential difference of 16.2 V?
(d) If these atoms are in the ground state, can they absorb radiation having a wavelength of 2000 Å ?
(e) what is the photoelectric threshold wavelength of this atom?

A

1035 Å

B

1220 Å

C

3650 Å

D

690 Å

Text Solution

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The correct Answer is:
A
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