Frequently Asked Questions about Argon
What is the atomic number of argon?
Argon has an atomic number of 18, meaning each atom contains 18 protons in its nucleus.
What is the atomic mass of argon?
The standard atomic weight of argon is 39.948 u (unified atomic mass units).
What category does argon belong to?
Argon is classified as a noble gas.
What is the state of argon at room temperature?
Argon is a gas at 20 °C (68 °F).
What is the melting point of argon?
The melting point of argon is -189.35 °C / 83.8 K.
What is the boiling point of argon?
The boiling point of argon is -185.85 °C / 87.3 K.
What is the density of argon?
The density of argon is 1.63e-3 g/cm³ (20°C).
What is the electron configuration of argon?
The electron configuration of argon is [Ne] 3s2 3p6.
When was argon discovered?
Argon was discovered in 1894 by Lord Rayleigh and William Ramsay.
Is argon radioactive?
Argon is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of argon?
No known biological role.
What are the common uses of argon?
Argon is used for: Welding gas; Lighting; Scientific instruments.
