Today, the periodic table is organized by atomic number, which is the number of protons in the nucleus. But they didn’t know about protons then, so they organized everything by atomic weight.

There's a clever design to the Periodic Table. Can you guess why every element has its own special spot? See if you're right with BBC Bitesize.

Abubakr says the major disadvantage with the current table is, well, the shape itself and that it doesn’t help to describe the properties of the elements. He suggests instead using a “circular form” ...

This year, the periodic table of chemical elements celebrates its 150th birthday. As the candles on the cake are lit, it's time to test your knowledge, with our quiz.

This is a big year for the Periodic Table of the Elements as the world celebrates the 150th anniversary of Dmitri Mendeleev's creation. We can now lays eyes on a fascinating relic of its history.

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.

You may remember the periodic table of the elements as a dreary chart on your classroom wall. If so, you never guessed its real purpose: It’s a giant cheat sheet. We have 10 things you didn’t know ...

Probably the periodic table of antimatter—the anti–periodic table. Antimatter is the mirror image of the regular old matter all around us. Instead of our negatively charged electrons, there ...

To mark the 150th anniversary of the chart that has come to symbolize the field of chemistry, 2019 has been declared to be the International Year of the ...