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Calculate the IE of (a) one Li^(2+) ion ...

Calculate the IE of (a) one `Li^(2+)` ion (b) one mole of `Li^(2+)` ions. Given Rydberg constant `= 1.0974 xx 10^(7)m^(-1)`

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(a). `19.638xx10^(-18)J`
(b). `1.118xx10^(4)kJ" "mol^(-1)`.
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