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- #Classification of Elements and Periodicity in Properties
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Which of the following have no unit?
(i) Electronegativity
(ii) Electron gain enthalpy
(iii) Ionisation enthalpy
(iv) Metallic character
Answers (1)
The answer is the option (i) and (iv)
Explanation: Electronegativity of an element is the tendency of an atom of that element to attract shared electrons towards itself, and unlike ionisation enthalpy and electron gain enthalpy, it is not a measurable quantity.
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