sodium belong to alkali metals , group 1 on the periodic table
sodium is not metallic_element. group_1_elements is not alkali_metals. group_1_elements is alkali_metals. sodium is not alkaline_metal. sodium is alkaline_metal. group_2_elements is alkaline_earth_metals. one_of_chemical_elements is not sodium. sodium_ion is not sodium_atom. sodium is metallic_element. one_of_chemical_elements is sodium.