such as metals or gases, while also giving each individual element its own chemical symbol. In this periodic table of ...

Atoms of non-metal elements gain electrons in some of ... See the study guide on groups in the periodic table for more information.

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today ... Rendus' describing relationships between groups of ...

Spraying Windex onto the samples produces a color that depends on the metal residing in the dirt ... we asked clubs to create elements of the periodic table featuring a mole. The Period Table of ...

4th Period: Potassium and Calcium—Electrons go into the fourth energy level. A small piece of sodium metal is placed in water. The sodium reacts with the water and gets very hot, producing sodium ...

On April 4th, responding to Donald Trump’s tariffs, China restricted sales to America of seven rare earths. The move forces ...

Ram Mohan looks at how bismuth — a remarkably harmless element among the toxic heavy metals in the periodic table — has sparked interest in areas varying from medicinal to industrial chemistry.