Which two groups of elements in the periodic table are most reactive
2 answers
alkali metals and halogens; groups 1 and 17
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.