midterm study for science Flashcards
1
Q
What are the horizontal rows called?
A
Periods
2
Q
What do the horizontal row numbers tell us?
A
Same valence electrons
3
Q
What are the vertical columns called?
A
Groups
4
Q
What do the vertical column numbers tell us?
A
Electrons on outer shell
5
Q
What group contains the most reactive metals?
A
The most reactive groups are Halogens and Alkali metals
6
Q
Most reactive metal?
A
Francium
7
Q
Most reactive nonmetal?
A
Fluorine
