The molecular weight of a compound is determined by the elements and their respective number in the molecular formula.
molecular weight for a compound =
= SUM(atomic weights for all of the elements in the molecular formula)
|
Element |
Symbol |
Atomic Weight |
|
hydrogen |
H |
1.008 |
|
helium |
He |
4.003 |
|
lithium |
Li |
6.94 |
|
beryllium |
Be |
9.012 |
|
boron |
B |
10.811 |
|
carbon |
C |
12.011 |
|
nitrogen |
N |
14.007 |
|
oxygen |
O |
15.999 |
|
fluorine |
F |
18.998 |
|
sodium |
Na |
22.99 |
|
magnesium |
Mg |
24.305 |
|
aluminum |
Al |
26.982 |
|
silicon |
Si |
28.086 |
|
phosphorus |
P |
30.974 |
|
sulfur |
S |
32.066 |
|
chlorine |
Cl |
35.453 |
|
potassium |
K |
39.098 |
|
calcium |
Ca |
40.078 |
|
chromium |
Cr |
51.996 |
|
manganese |
Mn |
54.938 |
|
iron |
Fe |
55.845 |
|
cobalt |
Co |
58.933 |
|
nickel |
Ni |
58.693 |
|
copper |
Cu |
63.546 |
|
zinc |
Zn |
65.39 |
|
arsenic |
As |
74.922 |
|
selenium |
Se |
78.96 |
|
bromine |
Br |
79.904 |
|
silver |
Ag |
107.868 |
|
cadmium |
Cd |
112.411 |
|
tin |
Sb |
118.710 |
|
iodine |
I |
126.904 |
|
cesium |
Cs |
132.905 |
|
barium |
Ba |
137.327 |
|
gold |
Au |
196.967 |
|
mercury |
Hg |
200.59 |
|
lead |
Pb |
207.2 |
|
bismuth |
Bi |
208.98 |
Specialty: Clinical Laboratory
