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In 1975, the Commission recommended Ar (K) = 39.0983 (3), based on new mass-spectrometric measurements and results of a mineralogical study of possible isotopic variations. 4. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Atomic Mass of Potassium Atomic mass of Potassium is 39.0983 u. Isotope abundances of potassium. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. Atomic number; 19; Atomic mass; 39.0983 g.mol -1; Electronegativity According To Pauling. The atomic mass is the mass of an atom. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. Atomic number (number of protons in the nucleus): 19; Atomic symbol (on the Periodic Table of Elements): K (from the Latin word for alkali, kalium.) It is denoted by the symbol ‘K’. Isotope data for potassium-37 in the Periodic Table Isotopes of Potassium (click to see decay chain): 32 K 33 K 34 K 35 K 36 K 37 K 38 K 39 K 40 K 41 K 42 K 43 K 44 K … Potassium. Potassium Properties: Potassium's melting point is 63.25°C, boiling point is 760°C, specific gravity is 0.862 (20°C), with a valence of 1. In the above, the most intense ion is set to 100% since this … The disintegration of potassium-40 is used in geological age calculations (see potassium-argon dating). Element Potassium (K), Group 1, Atomic Number 19, s-block, Mass 39.098. -1.298099. 41 K. 40.9618254 (12) 6.7302 (44) 3 / 2. 0.8; Density; 0.86 g.cm -3 at 0 °C; Melting point; 63.2 °C Please visit the Potassium element page for information specific to the chemical element of the periodic table. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope K-63 (Potassium, atomic number Z = 19, mass number A = 63). Potassium is the first element of the fourth period (row) in the periodic table. More... Potassium-39 atom is the stable isotope of potassium with relative atomic mass 38.963707, 93.3 atom percent natural abundance and nuclear spin 3/2. The decay of 40 K to 40 Ar is used in potassium-argon dating of rocks. Potassium-39 is normally about 13.5 times more plentiful than potassium-41. Natural potassium is composed of three isotopes, including potassium-40 (0.0118%), a radioactive isotope with a half life of 1.28 x 10 9 years. Minerals are dated by measurement of the concentration of potassium and the amount of radiogenic 40 Ar that has accumulated. The atomic mass of potassium is 39.098 atomic mass units. Atomic weight (average mass of the atom): 39.0983 In a human body of 70 kg mass, about 4,400 nuclei of 40 K decay per second. The natural radioactivity of potassium is due to beta radiation from the potassium-40 isotope (10 9 years half-life). The result of low Potassium Periodic Table levels is evident in numerous symptoms like restricted growth, reduced flowering, lower yields, and lower quality products. 0.2148699. What is Potassium on the Periodic Table?