Which elements are called alkali metals in the periodic table?

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Periodic table of the elements with color-coded categories and labeled element groups, showing atomic numbers, symbols, and basic information for each chemical element. — periodic table Modern version of the periodic table of the elements. To learn an element's name, atomic number, electron configuration, atomic weight, and more, select one from the table.

The alkali metals are six chemical elements located in Group 1 of the periodic table. These elements are:

Lithium (Li)
Sodium (Na)
Potassium (K)
Rubidium (Rb)
Cesium (Cs)
Francium (Fr)

While hydrogen is also placed in Group 1 because it has one electron in its outermost shell, it is not classified as an alkali metal because it is a gas at room temperature and does not share the metallic properties of the other elements in the group.12