Question

match the following group numbers to their correct names? 1a 2a 7a 8a # noble gases # halogens # alkali metals # alkaline earth metals

Explanation:

In the periodic table, group 1A elements are alkali metals. Group 2A elements are alkaline - earth metals. Group 7A elements are halogens. Group 8A elements are noble gases.

Answer:

1A - Alkali Metals
2A - Alkaline Earth Metals
7A - Halogens
8A - Noble Gases