Cesium is a metal in group IA of the periodic table with atomic number 55, an atomic weight of 132.905, and a density of 1.9 Mg/m 3. Its melting point is 28.7 C, and it boils at 690 C. The electronic ...

Alkali metals are the six different chemical elements found in the first column of the periodic table: lithium (Li), sodium ...

The periodic table, also known as the periodic table of (the) chemical elements, is a tabular display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is ...

New discoveries continuously refine our perspective, with many breakthroughs reported regularly. Whether revolutionary or ...

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 ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards itself within a chemical bond. This vital theoretical ...

Due to this incredible rarity, there was a hole in the periodic table below Cesium and to the left of Radium and Actinium. Thanks to Mendeleev, chemists of the late 1800s knew element 87 existed ...

Can France claim the first periodic table? Probably not, but a French Geology Professor made a significant advance towards it, even though at the time few people were aware of it. Alexandre Béguyer de ...

Play this game to learn about lots of different elements in the periodic table. While you're watching, look out for where different elements are found in the periodic table. Mrs Roberts ...