You know the periodic table that hung on the wall of every science class you took at school? As of today, it’s wrong. Or more precisely, it's inaccurate. One of the biggest changes in decades is set ...

Elements in group 1 and group 2 are metals. Atoms of group 1 elements have one electron in their outer shell, and atoms of group 2 elements have two electrons in their outer shell. Elements in groups ...

Periodic table is an arrangement of all known elements organized on the basis of structure and atomic number. Moving across the periodic table, one finds an increase in the number of protons. Moving ...

Creating mnemonic phrases can help you remember the order of elements, especially for the first 20 elements or specific groups. These phrases are general and are available on other free online sources ...