18
Ar
Argon
39.948 u
Argon
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คาบ
3
หมู่
18
บล็อก
p-บล็อก
สถานะ (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.
ลักษณะ: Colorless gas
แก๊สมีตระกูล เพิ่มเติม
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 แก๊สมีตระกูล.
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.