The ionisation energy of a H-like Bohr atom is 4 Rydbergs. (i) What is the wavelength of radiati...

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The ionisation energy of a H-like Bohr atom is 4 Rydbergs.
(i) What is the wavelength of radiation emitted when the \( e^{-} \)jumps from the first excited state to the ground state?
(ii) What is the radius of first Bohr orbit for this atom? [1 Rydberg \( =2.18 \quad 10^{-18} \mathrm{~J} \) ]
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