The ionisation energy of potassium is lower than that of sodium. Give – InterviewSolution

1.	The ionisation energy of potassium is lower than that of sodium. Give reason.
Answer» Solution :Because the distance of the OUTERMOST orbit (N-SHELL) from the nucleus of potassium is LARGER than the M-shell of SODIUM. THUS, it is more easy to remove an electron from the outermost shell of potassium atom as compared to sodium.

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