Note that, each element may contain more isotopes, therefore this resulting atomic … 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. Argon gas is used to fill conventional incandescent and fluorescent light bulbs. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. 10 Argon Facts . Argon was suspected to be present in air by Henry Cavendish in 1785. This is a list of the 118 chemical elements which have been identified as of 2021. Argon is the third-most abundant gas in the Earth’s atmosphere, at … Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. 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. 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. Argon. The chemical symbol for Argon is Ar.. Atomic Mass of Argon. 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: Here is a collection of useful and interesting argon element facts. Argon is a chemical element in the 18 group of the periodic table. It has eight electrons in the outer shell, which make it very stable and resistant to reactions. Argon was the first noble gas to be discovered. Unlike some other gases, it remains colorless even in liquid and solid form. Atomic mass of Argon is 39.948 u. M60b-1 … The chemical symbol for Argon is Ar . 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 is atomic number 18 on the periodic table, with the element symbol Ar. 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. Argon is a noble gas with element symbol Ar and atomic number 18. Number of Levels: 3: First Energy Level: 2: Second Energy Level: 8: Third Energy Level: 8 Know the Uses of Argon, Chemical Properties of Argon, Atomic Mass of Argon, & more at BYJU'S Atomic Number of Argon. It is best known for its use as an inert gas and for making plasma globes. 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