The periodic table The periodic table is a chart of all ... all react vigorously with water to produce an alkaline solution. Group 7 halogens The Group 7 elements are also known as the halogens.

How is the table organized? The Periodic Table, first compiled by Russian chemist Dmitri Mendeleyev, is organized by the number of protons in the nucleus of each element's atom, known as the ...

When the alkali metals react with the different halogens (Group 7 of the periodic table), the group of compounds formed are known as the alkali metals halides. Due to the fact that there are a ...

In 1869, Mendeleev's first periodic table did not include them ... But Ramsey established their position between halogens and alkali metals, and was awarded the Nobel Prize in Chemistry in ...