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