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...
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 (Z) 18 Group group 18 (noble gases) Period period 3 Block p-block Electron configuration [Ne] 3s2 3p6 Electrons per shell 2, 8, 8 Physical properties Phase at STP gas Melting point 83.81 K (−189.34 °C, −308.81 °F) Boiling point 87.302 K (−185.848...
Atomic number: 18 Group numbers: 18 Period: 3 Electronic configuration: [Ne] 3s2 3p6 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 ...
Atomic number 18 Atomic weight 39.948 amu Standard state Gas at 298 K CAS Registry ID 7440-37-1 Group in periodic table 18 Group name Noble gas Period in periodic table 3 Block in periodic table p-block Color Colorless Classification Non-metallic Melting point 83.80 K (-189.35°C or -308.8...
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...
Learn what is argon. Understand argon properties, such as its melting point, see its formula on the periodic table, and explore its uses as a noble...
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. 1s22s22p63s23p6 In cosmic abundance, argon ranks approximately 12th among the...
Here's a collection of useful and interesting argon facts. Argon is the noble gas with element atomic number 18 with element symbol Ar.
Argon (Ar) - Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Know the Uses of Argon, Chemical Properties of Argon, Atomic Mass of Argon.