The first ionisation energy of lithiumwill be46.46. – InterviewSolution

1.	The first ionisation energy of lithiumwill be46.46.
Answer» The value of the ionisation energy (2370 kJ mol-1) of lithium is much higher than hydrogen, because the nucleus now has 2 protons attracting the electrons instead of 1. Lithium is 1s^22s^1. Its outer electron is in the second energy level, much more distant from the nucleus.

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