Element 54

Xenon (Xe)

54

Xe

xenon

Nonmetal · p block · group 18, period 5

Electron configuration: $[\mathrm{Kr}]\,5s^{2}\,4d^{10}\,5p^{6}$
Unpaired electrons: 0 (diamagnetic)
Valence electrons: 8
Molar mass: 131.29 g/mol
Electronegativity: 2.6
Atomic radius: 131 pm
First ionization energy: 1170 kJ/mol
Next ionization energies: 2,046
Electron affinity: anion not bound

Course molecules with xenon

Practice

Practice xenon

Questions from the course about xenon. If you’re signed in, your answers count toward your progress.

Question 1Compare two elements and explainExam level
Which element has the higher first ionization energy, $\ce{Kr}$ or $\ce{Xe}$ , and why?

Where it comes up in the course