group 1 elements

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A group of elements in the periodic table: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and Francium (Fr). They are known as the alkali metals. Formerly, they were classified in group I, which consisted of two subgroups: group IA (the main group) and group IB. Group IB consisted of the coinage metals, copper, silver, and gold, which comprise group 11 and are usually considered with the transition elements.

Subjects: Chemistry.

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