The periodic table may excite some terrifying others. But this unique take on the table from a Seattle-based designer looks like fun for everyone, its fun design and interactive features showing ...

Periodic Table Trends Activity Download, print, and cut the cards you need to do this activity. Then watch the instructional video (in English or en Español) to learn how to play.

This video explains the periodic table, containing all the known elements arranged in groups and periods. Elements in the same group of the periodic table show trends in physical properties, such ...

The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev. Mendeleev intended the table to ...

Electronegativity: Read the article to find out what electronegativity is, how it is measured and what are the periodic trends in the electronegativities of elements.

Measurements of an artificial radioactive element called lawrencium could revive an arcane controversy over the element’s position in the periodic table — and the structure of the table itself ...