The Periodic Table Quick Check

Question

1 of 51 of 5 Items
Question
Which two groups of elements in the periodic table are the most reactive?(1 point)
Responses

alkali metals and halogens
alkali metals and halogens

noble gases and alkali metals
noble gases and alkali metals

alkaline earth metals and halogens
alkaline earth metals and halogens

halogens and noble gases

Answer 1

alkali metals and halogens