The zigzag, staircase, line in the diagram of the periodic table above separates the metals ... The symbol for the element is the first letter of its English or Latin name, written as a capital ...

Each element in the periodic table has: A unique symbol – a one or two-letter abbreviation used to represent the element. An ...

After the second level has 8 electrons, the next electron goes into the third level. 3rd Period: Sodium to argon—Electrons go into the third energy level. After the third energy level has 8 electrons, ...

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 ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today ... and as Mendeleev wrote in his letter his work made ...