Chemical elements listed by atomic number The elements of the periodic table sorted by atomic number. Click on any elements name for further chemical properties, environmental data or health effects. This list contains the 118 elements of chemistry. Atomic Number, Mass Number and Atomic Weight The number of protons in the nucleus of an element is its atomic number. It is possible to confuse these values, but they are quite distinct from one another. Atoms consist of a nucleus containing positively charged protons and electrically neutral neutrons, with electrons orbiting some distance away. Be I Ground State 1s 2 2s 2 1 S 0 Ionization energy 75192.64 cm-1 (9.32270 eV) Ref. KM97 Be II Ground State 1s 2 2s 2 S 1 / 2 Ionization energy 146882.8 cm-1 (18.21114 eV) Ref.

Element Be Atomic Number

Here is a list of the elements sorted by atomic number.

Atomic Number On Periodic Table