alleryElectronegativity, unlike ionisation enthalpy, is:
AAlways zero
BNot measurable
CFully constant
DEasily weighed
Answer & Solution
Correct answer: B. Not measurable
1. Ionisation enthalpy and electron gain enthalpy can be measured.
2. Electronegativity is a qualitative measure instead.
3. So it is not a measurable quantity.
_Source: syllabus Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._
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