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Class 11 · Chemistry · Classification of Elements and Periodicity in Properties
Explain why the first ionisation enthalpy of nitrogen is greater than that of oxygen.
3 marksMediumShort answer
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5 questions
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Class 11 · Chemistry · Classification of Elements and Periodicity in Properties
Why does the atomic radius of the noble gases appear larger than that of the halogen before them?
3 marksMediumShort answer
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Class 11 · Chemistry · Classification of Elements and Periodicity in Properties
Why is the second ionisation enthalpy of an element always greater than the first?
3 marksMediumShort answer
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Class 11 · Chemistry · Classification of Elements and Periodicity in Properties
Define electronegativity and state how it varies in the periodic table.
3 marksMediumShort answer
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Class 11 · Chemistry · Classification of Elements and Periodicity in Properties
Arrange Na+, Mg2+, F− and O2− in order of increasing ionic radius and give the reason.
3 marksMediumShort answer