Answer:
All the members of a group of elements have the same number of valence electrons and similar chemical properties.
Explanation:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.
Answer: 2.5
Magnesium>Calcium>Potassium>rubidium
I think the answer is C- radiation
If its not C its A Hope this helps forgive me if i'm wrong :/
hmmmmmmmmmmmmmmmmmmm
not sure tbh, ask ur teacher unless someone else helps you!
