Three-dimensional depiction of the Periodic Table of Niches. Each box represents a lizard niche (n1-n12). Species pairs from different geographic regions or different evolutionary lineages (clades ...

In 1871, Dimitri Mendeleev's periodic table was presented to the world, but missing many of the 118 elements leaving place-holders for those yet to be discovered. Each element added has a unique ...

The periodic table is a fundamental part of understanding chemistry. Elements define our universe: they are the components and foundation of the substances that we interact with every day.

Mendeleev’s periodic table, published in 1869, was a vertical chart that organized 63 known elements by atomic weight. This arrangement placed elements with similar properties into horizontal rows.

T he periodic table stares down from the walls of just about every chemistry lab. The credit for its creation generally goes to Dimitri Mendeleev, a Russian chemist who in 1869 wrote out the known ...

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.