Periodic 20 Flashcards
1
Q
Hydrogen
A
H
2
Q
Helium
A
He
3
Q
Li
A
Lithium
4
Q
Beryllium
A
Be
5
Q
Boron
A
B
6
Q
Carbon
A
C
7
Q
Nitrogen
A
N
8
Q
Fluorine
A
F
9
Q
Neon
A
Ne
