# atomic mass of argon

›› Argon molecular weight. Calculate the average atomic mass of argon to two decimal places, given the following relative atomic masses and abundances of each of the isotopes; argon-36 (35.97amu; 0.337%), argon-38 (37.96amu; 0.063%), and argon-40 … For potassium metal, Z=19; its mass is 39.10*g*mol^-1. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. 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. Three isotopes of argon occur in nature-- 36mass number, 18 atomic number of Ar, 38 mass no., and 18atomic no. OR: atomic mass of argon is 40 g/mol, so in a 40g sample of argon, there ought to be 1 mole atoms, or 6.02x10^23 atoms. Argon is a chemical element in the 18 group of the periodic table. of Ar. Atomic Number of Argon. Go To: Top, Mass spectrum (electron ionization), References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. Know the Uses of Argon, Chemical Properties of Argon, Atomic Mass of Argon, & more at BYJU'S Get an answer for 'Argon has 3 isotopes mass of 36,38,40. 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. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. Molar mass of Ar = 39.948 g/mol. Number of protons in Argon is 18. Relative abundances & atomic masses: 0.0337% , 35.978 amu; 0.063% , 37.963 amu & 99.600%, 39.962. So even though most argon atoms are more massive than most potassium atoms, all potassium atoms have one more positively charged, massive nuclear particle than does argon. 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 Because the Periodic Table is based on atomic number, Z, and not on atomic mass. Atomic weight of Argon is 39.948 u or g/mol. Melting point of Argon is -189,4 °C and its the boiling point is -185,9 °C. M60b-1 (27.62966 eV) Ref. Calculate the average atomic mass… Atomic Number of Argon is 18.. Chemical symbol for Argon is Ar. For argon gas, Z=18; its mass is 39.95*g*mol^-1. just divide the mass of sample by the mass of argon. of Ar, and 40mass number, 18 atomic no. M60b

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