A plot of first-ionization energy versus atomic number shows pronounced maxima at and

CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

Problem

A plot of first-ionization energy versus atomic number shows pronounced maxima at

Z=2,10,18,36,

and

54

. Which family of elements is most likely responsible for these recurring peaks? (a) Halogens (b) Alkaline earth metals (c) Noble gases (d) Alkali metals

Related theory

Ionisation enthalpy
Classification of Elements and Periodicity in Properties
Ionisation potential
Periodic Trends in Physical Properties

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