noble metal 

Statements about this table:
antimony have a potential of 0152 v and a period of 5
ruthenium have a period of 5
platinum have a period of 6
element
group
period
reaction
potential
gold
11
6
au 3 + + 3e → au
1.56 v
platinum
10
6
pt 2 + + 2e → pt
1.18 v
iridium
9
6
ir 3 + + 3e → ir
1.156 v
palladium
10
5
pd 2 + + 2e → pd
0.987 v
osmium
8
6
oso 4 + 8 h + + 8e → os + 4 h 2 o
0.838 v
element
group
period
reaction
potential
silver
11
5
ag + + e → ag
0.7996 v
mercury
12
6
hg 2 + 2 + 2e → 2 hg
0.7973 v
polonium
16
6
po 2 + + 2e → po
0.65 v
rhodium
9
5
rh 2 + + 2e → rh
0.600 v
ruthenium
8
5
ru 2 + + 2e → ru
0.455 v
element
group
period
reaction
potential
copper
11
4
cu 2 + + 2e → cu
0.337 v
bismuth
15
6
bi 3 + + 3e → bi
0.308 v
technetium
7
5
tco 2 + 4 h + + 4e → tc + 2 h 2 o
0.272 v
rhenium
7
6
reo 2 + 4 h + + 4e → re + 2 h 2 o
0.259 v
antimony
15
5
sb 2 o 3 + 6 h + + 6e → 2 sb + 3 h 2 o
0.152 v