sodium and potassium  belong to alkali metals , group 1 on the periodic table
one_of_chemical_elements is potassium. one_of_chemical_elements is not potassium. group_1_elements is not alkali_metals. group_1_elements is alkali_metals. sodium is not alkaline_metal. potassium is alkaline_metal. sodium is alkaline_metal. one_of_chemical_elements is not sodium. potassium is not alkaline_metal. one_of_chemical_elements is sodium.