Answer:
The vertical columns (group) of the periodic table are arranged such that all it's elements have the same number of valence electrons. All elements within a certain group thus group share similar properties.
Answer:
I think it's C or D Sorry if I'm Wrong
Explanation:
it just makes the most sense to me
Large samples... also can be small as well but usually bigger is better
I think it's <em>80 . 12</em>
pls tell me if correct
