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