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