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