
Nonmetals
Nonmetals make up only a small fraction of the periodic table but include some of the most chemically important elements: oxygen, nitrogen, carbon, hydrogen and the halogens (fluorine, chlorine, bromine, iodine). They are typically poor conductors of heat and electricity and form covalent bonds rather than the metallic bonds that dominate the rest of the table.
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1
1.0079
H
Hydrogen
Nonmetal
6
12.0096
C
Carbon
Nonmetal
7
14.0064
N
Nitrogen
Nonmetal
8
15.999
O
Oxygen
Nonmetal
9
18.9984
F
Fluorine
Nonmetal
15
30.9738
P
Phosphorus
Nonmetal
16
32.059
S
Sulfur
Nonmetal
17
35.446
Cl
Chlorine
Nonmetal
34
78.9718
Se
Selenium
Nonmetal
35
79.901
Br
Bromine
Nonmetal
53
126.904
I
Iodine
Nonmetal