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 ...

The modern periodic table is based closely on the ideas he used ... For example, lithium (Li), sodium (Na) and potassium (K) all have the same kind of reaction with water. The group of elements ...

The modern periodic table is based closely on the ideas he used ... For example, lithium (Li), sodium (Na) and potassium (K) all have the same kind of reaction with water. The group of elements ...

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 ...

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 ...

Our bodies require other elements, including non-metal elements such as phosphorus (P), sulphur (S) and chlorine (Cl), and metal elements like potassium (K), sodium (Na), calcium (Ca) and ...

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 ...