18 Ar Argon 39,948 u

Argon

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Periode
3
Golongan
18
Blok
p-blok
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.

Penampilan: Colorless gas

Sifat Fisika

Massa Atom 39.948 u
Kerapatan 0.0017837 g/cm³
Titik Lebur -189.3 °C
Titik Didih -185.8 °C
Fase pada STP Gas
Jari-jari Atom 71.0 pm

Sifat Elektronik

Energi Ionisasi 1520.6 eV
Elektron Valensi 8

Konfigurasi Elektron

Konfigurasi [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

Penemuan

Ditemukan oleh: Lord Rayleigh
Tahun: 1894

Tabel Periodik

Lantanida Aktinida

Lebih banyak Gas Mulia

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 mulia.
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.