32Germanium

Germanium is a metalloid in group 14, period 4. At 25 °C it is a solid.

Shells: 2, 8, 18, 4. A simple picture: electrons do not move in circles.

Symbol: Ge
Atomic number: 32 protons in the nucleus
Standard atomic weight: 72.630 ± 0.008
Electron configuration: [Ar] 3d¹⁰ 4s² 4p²
Electrons in each shell: 2, 8, 18, 4
Group, period, block: 14, 4, p
Family: Metalloids
State at 25 °C: solid
Electronegativity: 2.01 (Pauling scale)
First ionisation energy: 762.2 kJ/mol (7.899435 eV)

Where these numbers come from

Atomic weight: IUPAC CIAAW, abridged standard atomic weights 2024. Electron configuration and ionisation energy: NIST Atomic Spectra Database. Family, state and electronegativity: PubChem. See Sources. Melting points, boiling points and densities are left out for now: published values differ between sources, and we will add them once each has been checked.