The periodic table can be read across from left to the ... of elements arranged in the vertical columns. Elements in a group have similar physical and chemical properties and show trends.

That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...

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 ...

Meyer was just four years older than Mendeleev, and produced several Periodic Tables between 1864-1870. His first table contained just 28 elements, organised by their valency (how many other atoms ...

As part of the ChemClub's 10 th Anniversary (2015-2016), we asked clubs to create elements of the periodic table featuring a mole. To celebrate the International Year of the Periodic Table (IYPT) in ...

Group 7 of the periodic table is something of an oddity. When the first periodic table was formulated by Mendeleev, it was the only group that contained just a single known element — manganese.

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, ...

But the logic of the periodic table also relies upon the number and organisation of electrons in an atom. Let’s take chlorine as an example. It is positioned in group 7 of the periodic table ...