3.1 The Periodic Table Flashcards
1
Q
How are the elements arranged in the periodic table?
A
In order of atomic number.
2
Q
What are the groups on the periodic table?
A
Vertical columns.
3
Q
What are the periods on the periodic table?
A
Horizontal rows.
4
Q
What do the groups show?
A
Number of electrons in outer shell.
5
Q
What do periods show?
A
Number of shells in an atom.
