問題一覧
1
Chromium
Cr
2
manganese
Mn
3
Iron
Fe
4
Cobalt
Co
5
Nickel
Ni
6
Copper
Cu
7
Zinc
Zn
8
Gallium
Ga
9
Arsenic
As
10
Selenium
Se
11
Bromine
Br
12
Krypton
Kr
13
Strontium
Sr
14
Silver
Ag
15
Cadmium
Cd
16
Tin
Sn
17
Iodine
I
18
Xenon
Xe
19
Cesium
Cs
20
Barium
Ba
21
Tungsten
W
22
Gold
Au
23
Mercury
Hg
24
Lead
Pb
25
Polonium
Po
26
Francium
Fr
27
Radium
Ra