Asked by Anonymous

Which 2 groups of elements in the periodic table are the most reactive
Answered by oobleck
I and VII (or is that XVII?)
alkalis and halogens
Answered by DrBob222
My table uses 17 instead of XVII. It would make sense for IUPAC to set a single sytem instead of the three in use.
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.
Answered by Chuck E. Cheese
@im a npc is 100% correct for connexus!!
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