What are the elements from largest to smallest?

The elements in the Periodic Table are organized by increasing atomic number, which reflects the number of protons in an atom's nucleus. They can also be categorized by their state at room temperature (solid, liquid, gas) or by their properties (metals, nonmetals, metalloids). In terms of size, the largest elements by atomic radius are typically found in group 1 (alkali metals), while the smallest elements are found in group 18 (noble gases). Additionally, atomic size generally decreases across a period from left to right and increases down a group.