Atomic number is the number of positively charged protons in the atom's nucleus. When a new chemical element is discovered, it may be given a temporary three-letter chemical symbol until …

What is an atomic number? Learn the meaning of atomic numbers and other key terms. See examples of elements with their atomic symbols and identify ions and isotopes.

Learn the properties of strontium, its chemical symbol, atomic number, and mass. Explore the technological applications and negative effects of...

Learn about the fluorine element. Understand the properties of fluorine, explore its uses, find fluorine on the periodic table, and see its element symbol.

What is krypton? Learn about the krypton element, its atomic number and symbol. See the properties, isotopes, compounds and uses of the element krypton.

What is an element notation? Element notation refers to the symbol of the element. Atomic number and mass number may be present on its left as a subscript and superscript.

Radon: Definition & Overview The definition of radon describes the chemical element on the periodic table with the atomic number 86. The radon chemical symbol on the periodic table is Rn.

Learn about deuterium. Understand what deuterium is, its symbol, mass, atomic number, and neutrons. Also, explore compounds of deuterium and study its uses.

What is tin? Learn in detail about the element tin and its symbol. See the discovery of tin, properties of tin, and position of tin in the periodic table.

Atomic mass is shown on the periodic table. It is the number with a decimal on the periodic table and is often listed below the symbol for the atom. Mass number is not shown on the periodic …