Ununpentium

Properties of ununpentium atoms

The electron affinity of ununpentium is no data  kJ mol^-1.

Ionisation Energies

This section includes ionisation energies of ununpentium.

Electronic configuration

The following represents the electronic configuration and its associated term symbol for the ground state neutral gaseous atom. The configuration associated with ununpentium in its compounds is not necessarily the same.

• Ground state electron configuration:  [Rn].5f¹⁴.6d¹⁰.7s².7p³ (a guess based upon that of bismuth)
• Shell structure:  2.8.18.32.32.18.5
• Term symbol:   ⁴S_3/2 (a guess based upon guessed electronic structure)

A schematic representation of the shell structure of ununpentium - not what the atom of ununpentium "looks like".

WebElements Shop

WebElements now has an online shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.