The basic structure of the element chromium
, symbol Cr, an atom comprised of 24 protons, 28 neutrons, and 24 electrons.
In chemistry, Chromium (LH:1), symbol Cr, the 24th element (Z:24) of the periodic table, mass of 52 amu, is an atom comprised of 24 protons, 28 neutrons, and 24 electrons, with an electron structure: [Ar] 3d5 4s1.
- See main: Elemental composition of humans; Thims periodic table
In humans, chromium is the 21th most dominant element, by mass composition (0.00002% mass), of the 26-elements in the standard human molecular formula. 
- ↑ Thims, Libb. (2008). The Human Molecule (GB) (Amz) (Iss) (elemental composition table, pgs. 52-55). LuLu.