Asked by one

Which two groups of elements in the periodic table are the most reactive?

noble gases and alkali metals

alkali metals and halogens

alkaline earth metals and halogens

halogens and noble gases
Answered by oobleck
B
Answered by im a npc
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.
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