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Determine the maximum wavelength of inci...

Determine the maximum wavelength of incident radiation that can be used to remove tha remaining electron from a singly ionized helium atom `He^(+)(Z=2)`. Assume the electron is in its ground state

A

6.2 nm

B

22.8 nm

C

12.4 nm

D

45.6 nm

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The correct Answer is:
B
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