We learn the periodic table as the elements arranged according to the atomic number, which is an integer, a whole number. That's the number of protons in an atom of that element.

So, the mass number of this potassium isotope is 39. Atomic Number and Mass Number of First 30 Elements. Students are generally advised to memorise the first 30 elements from the periodic table.

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 .) Atomic weight (average mass of the atom): 39.0983 ...

04.09.2019 10:42 Chemical element potassium detected in an exoplanet atmosphere Dr. Janine Fohlmeister Presse- und Öffentlichkeitsarbeit Leibniz-Institut für Astrophysik Potsdam. Ergänzung vom ...

Elements: Potassium. Business Daily. Potash plumps up fruit, vegetables and grains, yet India is completely dependent on imports of this critical fertiliser to feed its populaiton ...

Lithium, for example, with an atomic number of 3, is a reactive metal — just like sodium (element number 11) and potassium (number 19). A good way to think about it is to imagine running your ...

Potassium deficiencies in women can come from a number of causes, including a poor diet, kidney disease, thyroid problems and even pregnancy can be triggers. Skip to content NOWCAST WBAL-TV 11 ...

Predictive power. Gallium. Mendeleev left blank spaces in his original periodic table so that he could properly line up the known elements. Gallium, element 31, was his first gap to be filled, in ...