Many scientists worked on the problem of organizing the elements, but Dmitri Mendeleev published his first version of the periodic table in 1869, and is most often credited as its inventor. Since then ...

Can you name everything from Ac to Zr? Test your knowledge of the periodic table and see if you can top the leaderboard ...

The periodic table on the website of the International Union of Pure and Applied Chemistry avoids making a decision about whether La and Ac or Lu and Lr are group 3 elements.

Chemistry & Physics. Chemistry 401: History of the Periodic Table . Season 1 Episode 401 | 29m 22s. The development of the periodic table as a result of the contributions two scientists.

Chemistry & Physics. Chemistry 403: Trends in the Periodic Table . Season 1 Episode 403 | 26m 9s. Students learn to describe the pattern in atomic number, atomic mass and atomic radius.

This gorgeously designed interactive periodic table is the easiest way to get the hang of chemistry and ace your mid-term exams.

Whether you are an aspiring Chemistry student or just a normal know-it-all geek, the Periodic Table offers you the simplest way to keep tabs on the atomic elements and their chemical properties ...

It’s not every day an element gets added to the periodic table. The last time it happened was 2016, when four new elements became official. For these elements, reaching the table was an epic ...

The periodic table brought solidity to a field of inquiry that had long been squishy. Sir Isaac Newton, in Query 31, a section in his 1717 work “Opticks,” listed and ranked chemical compounds ...

And for chemistry, no cause for celebration surpasses the origin of the periodic table of the elements, created 150 years ago this March by the Russian chemist Dmitrii Ivanovich Mendeleev.

In 2011, Nottingham scientists created the world’s smallest periodic table on a hair belonging to chemistry professor Martyn Poliakoff. That table measured 90 by 46 μm. This new table (detail ...