Question

8 what is the alkali metal with the smallest mass? a hydrogen (h) b lithium (li) c beryllium (be) d scandium (sc)

Explanation:

Alkali metals are in Group 1 of the periodic table. Hydrogen is not an alkali - metal. Beryllium is in Group 2 (alkaline earth metals) and Scandium is in the transition metals. Lithium is an alkali - metal and has the smallest atomic mass among alkali metals with an atomic mass of approximately 6.94 u.

Answer:

B. Lithium (Li)