Ar has the atomic number 18. The three stable isotopes have atomic masses 35.967545, 37.962732 and 39.962384 respectively. Its valence is usually 0. Atomic weight: 39.984 g mol 1 . Atomic diameter 3.04 . Melting point: 83.95 K. Boiling point: 87.29 K at 1 atm. Gas density 1.784 kg m 3...
Atomic Symbol: Ar Atomic Number: 18 Atomic Weight: 39.984 Isotopes andAbundances:40Ar(99.6%),38Ar(0.06%), and36Ar(0.34%) 1 Atm Melting Point: 83.95 K 1 Atm Boiling Point: 87.29 K Common Valences: 0 First Ionization Potential: 1520.6 kJ mol−1 Chondritic (CI) Abundance: ~10−6mol...
Argonis a chemical element in the periodic table that has the symbolArand atomic number 18. The third noble gas, in period 8, argon makes up about 1% of the Earth's atmosphere. Notable characteristics nitrogen oxygen fluorine Applications ...
atomic number 2 10 18 36 54 86 118 atomic weight 4.003 20.18 39.948 83.8 131.293 222 294*** melting point (°C) −272.2* −248.59 −189.3 −157.36 −111.7 −71 — boiling point (°C) −268.93 −246.08 −185.8 −153.22 −108 −61.7 — density at 0 °C, 1...
Atomic number (number of protons in the nucleus): 18 Atomic symbol (on the Periodic Table of the Elements): Ar Atomic weight (average mass of the atom): 39.948 Density: 0.0017837 grams per cubic centimeter Phase at room temperature: Gas Melting point: minus 308.83 degrees Fahrenheit (minus ...
Element Properties atomic number 18 atomic weight [39.792, 39.963] melting point −189.2 °C (−308.6 °F) boiling point −185.7 °C (−302.3 °F) density (1 atm, 0° C) 1.784 g/litre oxidation state 0 electron config. 1s22s22p63s23p6The...
Argon is a chemical element. On the Periodic Table of Elements, Argon is given the symbol 'Ar' and the atomic number 18. Argon has a melting point of minus 189.34 degrees Celsius and a boiling point of minus 185.85 degrees Celsius. ...
Atomic number:18 Group numbers:18 Period:3 Electronic configuration:[Ne] 3s23p6 Formal oxidation number:0 Electronegativities:- Atomic radius / pm:188 Relative atomic mass:39.948(1) Argon was discovered by Lord Raleigh and Sir William Ramsay (GB) in 1894. The origin of the name comes from...
Atomic Number: 18 Atomic Weight: 39.948 Appearance: Colorless inert gas Group: Group 18 (Noble Gas) Period: Period 3 Discovery: Lord Rayleigh and William Ramsay (1894) Discovery Argon was discovered by Sir William Ramsay and Lord Rayleigh in 1894 (Scotland). Prior to the discovery, Henry Cave...
MDL Number: MFCD00003431 MOL File: 7440-37-1.mol MSDS File: SDS Last updated:2025-01-27 09:38:02 Request For Quotation Argon Properties Melting point-189.2 °C(lit.) Boiling point-185.7 °C(lit.) Density1.784(0℃) vapor density1.38 (21 °C, vs air) ...