The mass number of argon is 40.How many protons, neutrons and electrons are there in an argon atom? ( ) 相关知识点: 试题来源: 解析 一个氩原子有 18 个质子、22 个中子和 18 个电子。 1. 原子序数: 氩的原子序数为 18,这意味着它的原子核中有 18 个质子。 2. 质量数: 氩的质量数为 40...
Atomic mass unit ; Avogadro constant and mole ; Atomic number ; Cosmogenic nuclides ; Nucleosynthesis ; Periodic Table ; Quantum numbersAcids and bases; Calcium carbonate and the carbonic acid systems ; Eh-pH relations ; Electrolyte theory ; Nitrogen cycle ; Soil ; Weathering: chemicalAnalysis...
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 ...
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.
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...
Argon Atomic Number: 18Argon Atomic Weight: 39.948What is Argon?Argon (Ar, atomic number 18) is the third most common gas in the world, even more so than carbon dioxide. The word "argon" means inactive, inert in Greek and refers to this gas in that it reacts with very few other ...
Prolonged exposure to fire or intense heat may cause the container to rupture violently and rocket.|Argon(0) is a monoatomic argon. It has a role as a member of food packaging gas and a neuroprotective agent.|A noble gas with the atomic symbol Ar, atomic number 18, and atomic weight ...
Atomic number18[1] CAS number7440-37-1[1] Position in the periodic tableGroupPeriodBlock 18[1]3[1]p[1] Location of Argon on the Periodic Table Properties and Characteristics of Argon General Properties Relative atomic mass39.948[1]
Argon is a chemical element; it has symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas.[7] Argon is the third-most abundant gas in Earth's atmosphere, at 0.934% (9340 ppmv). It is more than twice as abundant as water vapor (which ...
Here's a collection of useful and interesting argon facts. Argon is the noble gas with element atomic number 18 with element symbol Ar.