The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

These elements are building blocks of matter and everything around us is made up of them ... to help you remember the first 20 elements of the periodic table: H - Hydrogen He - Helium Li ...

Can you believe the periodic table has been around for over 150 years? Take this quiz to see if you can find the elements. What information do we collect from this quiz? The periodic table is a ...

with one Professor Foster saying he might have equally well listed the elements alphabetically. Even when Mendeleev had published his table, and Newlands claimed to have discovered it first, the ...

instead of the suffix for the rest of the periodic table, ~ium (helium is the exception to this rule due to historical precedent). Whether element 118 will use the ~on or ~ium suffix is up to ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards ... as well as optical properties (like color). Chemists ...