問題一覧
1
Hydrogen
h
2
Helium
he
3
Lithium
li
4
Beryllium
be
5
Boron
b
6
Carbon
c
7
Nitrogen
n
8
Oxygen
o
9
Fluorine
f
10
Neon
ne
11
Sodium
na
12
Magnesium
mg
13
Aluminum
al
14
Silicon
si
15
Phosphorus
p
16
Sulfur
s
17
Chlorine
cl
18
Argon
ar
19
Potasium
k
20
Calcium
ca
21
Mercury
hg
22
Lead
pb
23
Bismuth
bi
24
Uranium
u
25
Rubidium
rb
26
Cesium
cs
27
Francium
fr
28
Strontium
sr
29
Barium
ba
30
Radium
ra
31
Bromine
br
32
Lodine
l
33
Krypton
kr
34
Xenon
xe
35
Radon
rn
36
Chromium
cr
37
Manganese
mn
38
Iron
fe
39
Cobalt
co
40
Nickel
ni
41
Copper
cu
42
Zinc
zn
43
Silver
ag
44
Tin
sn
45
Platinum
pt
46
Gold
au
47
Hydrogen
h
48
Sodium
na
49
Fluorine
f
50
Aluminum
al
51
Silicon
si
52
Sulfur
s
53
Chlorine
cl
54
Mercury
hg
55
Lead
pb
56
Rubidium
rb
57
Cesium
cs
58
Strontium
sr
59
Lodine
l
60
Radon
rn
61
Chromium
cr
62
Xenon
xe
63
Manganese
mn
64
Iron
fe
65
Nickel
ni
66
Copper
cu
67
Zinc
zn
68
Silver
ag
69
Tin
sn
70
Gold
au