Periodic Table of the Elements

The periodic table of elements is an arrangement of the chemical elements ordered by atomic number in columns and rows presented so as to

The periodic table An 18-column by seven-row grid of the elements The chemical elements

elements Periodic table of elements Three dimensional side view of a blue colored Periodic table on dark blue background Tabular display of 118 known chemical elements

elements Arrangement of the modern periodic table · elements is based on Mendeleev's · observations ; however, instead of being organized by · atomic weight , the modern