Question

Which two groups of elements in the periodic table are the most reactive? (1 point)
O alkaline earth metals and halogens
O noble gases and alkali metals
O halogens and noble gases
o alkali metals and halogens

Answer 1

d
group 1 and group 17

Answer 2

1. alkali metals and halogens.
2. They have the same number of valence electrons.
3. They usually have high melting points.
4. Low or no reactivity.
5. 17.