periodic table 1-5 Flashcards
1
Q
HYDROGEN
A
H
1 - atomic number
1.008
1 - EPECTRONS PER SHELL
non-metal
2
Q
HELIUM
A
He
2
4.0026
noble gas
3
Q
LITHIUM
A
Li
3
7
alkali metals
4
Q
BERYLLIUM
A
Be
4
9
alkaline earth metals
5
Q
BORON
A
B
5
10.81
metalloid
