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Bohr's Model of a Hydrogen Atom

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Question

Calculate the ionisation energy of the hydrogen atom. How much energy will be required to ionise $1$ mole of hydrogen atoms? Given, that the Rydberg constant is $1.0974 \times 10^{7} m^{- 1}$ .

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Solution

$I E$ per hydrogen atom $= 2.182 \times 10^{- 18} J$
$I E$ per mole $= 1314$ $k J$ ${m o l}^{- 1}$ .

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