In 1843, Leopold Gmelin worked with the Dobereiner’s system and developed a table of 55 elements that contained many ... side of chemical science and especially with reference to the study of the ...

Watch this video to find out more information on the periodic table close periodic tableA table which lists all of the chemical elements and arranges them in a way that is useful. It allows us to ...

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.

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the transuranium element berkelium. According to a new study, the electronic signature of ...

Elementary school teachers can use these activities to enrich the study of many different science topics in the elementary curriculum ... In this edition of Celebrating Chemistry, explore atoms and ...