The ionisation energies of Lithium and S...

The ionisation energies of Lithium and Sodium are `520kJ Mol^(-1)` and `495kJ Mol^(-1)` respectively. The energy required to convert all the atoms present in 7mg of Li vapour and 23 mg of sodium vapour to their respective gaseous cations respectively are

A

52 J , 49.5 J

B

520 j, 495j

C

49.5 j , 52 j

D

495 j , 520 j

Text Solution

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The correct Answer is:

B

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