Periodic Table Flashcards
1
Q
Why are elements ordered into groups?
A
They have the same number of electrons in their outer shell
2
Q
What does this mean?
A
It gives them similar chemical properties
3
Q
What are elements in group 0?
A
Noble gasses
4
Q
How reactive are noble gasses?
A
They are unreactive
5
Q
Why are they unreactive?
A
Because they have a stable atom arrangement
8 electrons in their outer shell (except helium)
