Argon was discovered by Sir William Ramsay in 1894. 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 Structure answer choices . Q. How many protons neutrons and electrons does argon have? 40. How many electrons does it have? How many protons, neutrons and electrons does Argon have? Atomic number 83 and its identity is Bismuth. argon has 22 neutrons Argon has an atomic number of 18 and and Atomic mass of 40. 4. anon138682 January 2, 2011 . The number of protons is what defines the element. How many neutrons and electrons does argon have? Because its outer electron shell is full, it is chemically unreactive. Your welcome! In order to write the Argon electron configuration we first need to know the number of electrons for the Ar atom (there are 18 electrons). 18 + N = 40. In writing the electron configuration for Argon the first two electrons will go in the 1s orbital. If an element has 83 protons, what is its atomic number and which element is it? (Use your periodic table.) (Isotopes of an element have varying numbers of neutrons in the nucleus.) Argon (Ar) atom Bohr model video using the Periodic Table to determine the number of Protons, neutrons, the Atomic Mass, Atomic Number, number . When we write the configuration we'll put all 18 electrons in orbitals around the nucleus of the Argon atom. answer choices . the mass is made up of both protons and neutrons... therefore 40 - 18 = # neutrons. This means that some Argon atoms have 18 neutrons, some 20 neutrons and some 22 neutrons the isotope with 22 neutrons is the most common and forms 99.6% of all Argon. - 3377908 It is a noble gas and belongs to period 3 and group 18 of the periodic table. Potassium (K) Calcium (Ca) Nitrogen (N) Neon (Ne) Tags: Question 25 . argon has a molar mass of 40 and 18 prontons. 1 1. N = 22. there are 22 neutrons. 18 protons, 18 electrons, 40-18=22 neutrons. 5 years ago. Tags: Question 24 . Please answer me asap! Answer (1 of 4): 18 protons, 18 electrons, and 22 protons. anon112516 September 20, 2010 . SURVEY . 22. is argon used in light bulbs? An atom of argon has 18 protons and 22 neutrons. It is a nonmetal and a gas at room temperature. Anonymous. Atomic number is the number of protons. :) … What common compounds does Argon form? There are 22 neutrons in one atom of argon. The protons and electrons cancel each other out because protons produce a positive charge, electrons a negative charge, and they have the same amount. This tells you that it has 18 protons. On the periodic table, argon's atomic number is 18. anon110827 September 13, 2010 Argon has 22 neutrons in its nucleus, and the atomic weight of argon is 39.948 atomic mass units. 18. in what field does argon belong? isotope is the element and mass number the mass number is protons+neutrons argon has 18 protons and this isotope has a mass of 40 so P+N = Mass number. What element has 20 protons? anon252703 22 hours ago . 900 seconds . Therefore, argon has no electric charge (as with other elements). Will go in the 1s orbital by Sir William Ramsay in 1894 ) (! 22 neutrons 18 and and atomic mass units electric charge ( as with other elements ) has atomic. ( Ne ) Tags: Question 25 electric charge ( as with other elements ) orbitals the! 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