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Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
Question
When compared to lithium, it is easier to remove valence electron from K (Potassium). Why?
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Answer

Ionisation enthalpy of 'K' is lower than lithium due to larger atomic size.

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