Frequently Asked Questions about Gallium
What is the atomic number of gallium?
Gallium has an atomic number of 31, meaning each atom contains 31 protons in its nucleus.
What is the atomic mass of gallium?
The standard atomic weight of gallium is 69.723 u (unified atomic mass units).
What category does gallium belong to?
Gallium is classified as a post-transition metal.
What is the state of gallium at room temperature?
Gallium is a solid at 20 °C (68 °F).
What is the melting point of gallium?
The melting point of gallium is 29.76 °C / 302.91 K.
What is the boiling point of gallium?
The boiling point of gallium is 2203.85 °C / 2477 K.
What is the density of gallium?
The density of gallium is 5.91 g/cm³ (20°C).
What is the electronegativity of gallium?
Gallium has a Pauling electronegativity of 1.81.
What is the electron configuration of gallium?
The electron configuration of gallium is [Ar] 3d10 4s2 4p1.
What are the common oxidation states of gallium?
Gallium commonly exhibits the following oxidation states: +1, +3.
When was gallium discovered?
Gallium was discovered in 1875 by Paul-Émile Lecoq de Boisbaudran.
Is gallium radioactive?
Gallium is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of gallium?
No known biological role.
What are the common uses of gallium?
Gallium is used for: Semiconductors; LEDs; Solar cells; Low-melting alloys.
