Think of the periodic table you memorized in high school—seven neat rows of elements, each one ordered by atomic number, starting with lightweight hydrogen and marching on to oganesson, the heaviest recognized element with 118 protons. It’s impressive, but scientists ...
Did you know that there are up to 118 different chemical elements discovered? The atomic number of an element determines its position in the periodic table of elements. The first element is hydrogen, which has one proton, followed by helium, ...