Where is the atomic number on the periodic table?

Einsteinium is a synthetic element with symbol Es and atomic number 99. A member of the actinide series, it is the seventh transuranic element. read more

Chemical elements listed by atomic number The elements of the periodic table sorted by atomic number. click on any element's name for further chemical properties, environmental data or health effects. This list contains the 118 elements of chemistry. read more

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus. The atomic number uniquely identifies a chemical element. read more

One number you will find on all periodic tables is the atomic number for each element. This is the number of protons in the element, which defines its identity. How to Identify It: There isn't a standard layout for an element cell, so you need to identify the location of each important number for the specific table. read more