Argon is atomic number 18 on the periodic table, with the element symbol Ar. Argon. Argon is a noble gas with element symbol Ar and atomic number 18. VHU99 Ar II Ground State 1s 2 2s 2 2p 6 3s 2 3p 5 2 P° 3 / 2 Ionization energy 222848.3 cm-1 (27.62966 eV) Ref. Know the Uses of Argon, Chemical Properties of Argon, Atomic Mass of Argon, & more at BYJU'S Argon was the first noble gas to be discovered. Ar I Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 1 S 0 Ionization energy 127109.842 cm-1 (15.759610 eV) Ref. 10 Argon Facts . The chemical symbol for Argon is Ar . Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. This is a list of the 118 chemical elements which have been identified as of 2021. It is best known for its use as an inert gas and for making plasma globes. Note that, each element may contain more isotopes, therefore this resulting atomic … Argon (Ar, atomic number 18) is the third most common gas in the world, even more so than carbon dioxide. The chemical symbol for Argon is Ar.. Atomic Mass of Argon. Atomic Number of Argon. Atomic mass of Argon is 39.948 u. Atomic Number: 18: Atomic Radius: 188 pm (Van der Waals) Atomic Symbol: Ar: Melting Point:-189.34 °C: Atomic Weight: 39.95: Boiling Point:-185.85 °C: Electron Configuration: [Ne]3s 2 3p 6: Oxidation States: 0: It has eight electrons in the outer shell, which make it very stable and resistant to reactions. Here is a collection of useful and interesting argon element facts. Argon is the third-most abundant gas in the Earth’s atmosphere, at … Name: Argon Symbol: Ar Atomic Number: 18 Atomic Mass: 39.948 amu Melting Point:-189.3 °C (83.85 K, -308.74 °F) Boiling Point:-186.0 °C (87.15 K, -302.8 °F) Number of Protons/Electrons: 18 Number of Neutrons: 22 Classification: Noble Gas Crystal Structure: Cubic Density @ 293 K: 1.784 g/cm 3 Color: Colorless Gas Atomic … Argon gas is used to fill conventional incandescent and fluorescent light bulbs. A chemical element, often simply called an element, is a species of atoms which all have the same number of protons in their atomic nuclei (i.e., the same atomic number, or Z).. A popular visualization of all 118 elements is the periodic table of … But it was discovered in 1894 by Lord Rayleigh and Sir William Ramsay. Unlike some other gases, it remains colorless even in liquid and solid form. Argon is a chemical element in the 18 group of the periodic table. M60b-1 … Number of Levels: 3: First Energy Level: 2: Second Energy Level: 8: Third Energy Level: 8 Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Argon was suspected to be present in air by Henry Cavendish in 1785. The word "argon" means inactive, inert in Greek and refers to this gas in that it reacts with very few other elements in the periodic table. Argon is a colorless, flavorless, odorless noble gas. The chemical symbol for argon is a colorless, flavorless, odorless noble gas with element symbol and... 18 protons and 18 electrons in the atomic structure it was discovered 1894. Eight electrons in the atomic structure in 1785 eight electrons in the outer shell, make! That, each element may contain more isotopes, therefore this resulting atomic in 1785 this. Atomic Mass of argon a collection of useful and interesting argon element facts present air... 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