See if you can organize the first 25 elements of the periodic table in order in the quiz below. The periodic table as we know ...

In this edition of Celebrating Chemistry, explore atoms and the periodic table, go on an element scavenger hunt around your home, and try your hand at an elemental word search. Guide Linus—a lab ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...

Want to learn more about this centerpiece of chemistry? Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out ...

The ions formed have a full outer electron shell, so are very stable. See the study guide on groups in the periodic table for more information.

Two elements in group 1 of the periodic table are lithium and sodium. Very small pieces of lithium and sodium were reacted separately with water. In the periodic table, the group 7 elements and ...