18 Ar Argon 39,948 u

Argon

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Período
3
Grupo
18
Bloque
p-bloque
Fase (STP)
Gas

Argon is the third most abundant gas in Earth's atmosphere at 0.93%. It is used as an inert shielding gas in welding and lighting.

Apariencia: Gas incoloro

Propiedades físicas

Masa atómica 39.948 u
Densidad 0.0017837 g/cm³
Punto de fusión -189.3 °C
Punto de ebullición -185.8 °C
Fase a STP Gas
Radio atómico 71.0 pm

Propiedades electrónicas

Energía de ionización 1520.6 eV
Electrones de valencia 8

Configuración electrónica

Configuración [Ne] 3s² 3p⁶

Electron Shell Configuration

Argon electron shell configuration Ar 2e⁻ 8e⁻ 8e⁻

Position in Periodic Table

Argon position in the periodic table Ar

Descubrimiento

Descubierto por: Lord Rayleigh
Año: 1894

Bloque y período

Período

Tabla Periódica

Lantánidos Actínidos

Más Gas Noble

Frequently Asked Questions

What is Argon?
Argon (Ar) is a chemical element with atomic number 18. It is a gas at standard temperature and pressure, classified as a gas noble.
What are the key properties of Argon?
Argon has an atomic mass of 39.948 u, density of 0.0017837 g/cm³, melting point of -189.3°C, boiling point of -185.8°C.
What is the electron configuration of Argon?
The electron configuration of Argon is [Ne] 3s2 3p6. It is in the p-block of the periodic table.
Who discovered Argon?
Argon was discovered by Lord Rayleigh in 1894.