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PART - 1 CH - 3 Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryPART - 1 CH - 3 Classification of Elements and Periodicity in Properties2 Marks
Question
It is easy to form $Cs ^{+}$from Cs in comparison to $Na ^{+}$from Na . Why?
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Answer

On moving from up to down in group atomic size increases. Hence ionization enthalpy decreases. In comparison to Na , the size of Cs is more. Hence its ionization enthalpy is less in comparison to Na . Hence from this electrons are easily removed. Therefore it is easy to form $Cs ^{+}$from Cs in comparison to $Na ^{+}$from Na .

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