Two Period 3 elements have the following successive ionization energies (in…

CHEMISTRY · Subjective · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

Problem

Two Period 3 elements have the following successive ionization energies (in kJ·mol⁻¹): • Element A: 1012, 1903, 2910, 4956, 6276, 21 000 • Element B: 578, 1817, 2745, 11 580, 14 820, 18 450 Identify Element A and Element B and justify your choices based on the data.

Related theory

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

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