1
Q
o
A
oxygen
2
Q
c
A
carbon
3
Q
h
A
hydrogen
4
Q
n
A
nitrogen
5
Q
ca
A
calcium
6
Q
p
A
phosphorus
7
Q
k
A
potassium
8
Q
s
A
sulfur
9
Q
na
A
sodium
10
Q
cl
A
chlorine
11
Q
mg
A
magnesium
12
Q
f
A
flourine
13
Q
sn
A
tin
14
Q
sr
A
strontium
15
Q
ba
A
barium
16
Q
au
A
gold
17
Q
mercury
A
hg
18
Q
lead
A
pb
19
Q
cobalt
A
co
20
Q
bromine
A
br
21
Q
manganese
A
mn
22
Q
iodine
A
i
23
Q
iron
A
fe
24
Q
copper
A
cu
25
tungsten
w
26
silver
ag
27
aluminium
al
28
arsenic
as
29
bismuth
bi
30
chromium
cr
31
nickel
ni
32
zinc
zn
