Water is not found on the periodic table of elements because it is not an element. The periodic table lists all the known chemical elements, which are substances made up of only one type of atom. Water, on the other hand, is a compound made up of two different elements: hydrogen and oxygen.
Water has the chemical formula H2O, which means each molecule of water consists of two hydrogen atoms bonded to one oxygen atom. Since water is a combination of these elements rather than a single element, it does not appear on the periodic table.
In summary, the periodic table is designed to display individual elements, not compounds or mixtures. Water, being a compound, is therefore not listed on the periodic table.