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 ...

For example, water isn’t on the periodic table because it is a compound, not an element. Water is made from the element hydrogen bonded to the element oxygen. Water molecules are made up of two ...

But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

National Periodic Table Day, observed annually on February 7, honors one of the most significant achievements in scientific ...

Although metal ions are central to all of biochemistry, a group of elements clustered in the early part of the periodic table—carbon, nitrogen, oxygen and phosphorus—are highly represented in ...

In an oxygen (O2) molecule, both atoms have the same electronegativity ... Electronegativity and ionization energy follow the same periodic table trend. Elements that have low ionization energies tend ...

You interact with about two-thirds of the elements of the periodic table every day. Some, like carbon, oxygen, and nitrogen, make up our bodies and the air we breathe. Yet there is also a class of ...

You're listening to Chemistry in its element brought to you by Chemistry World, the magazine of the Royal Society of Chemistry. Keeping up with the neighbours is rarely a concern in the periodic table ...