|
Silicon
|
Si
|
14
|
Metalloid
|
from the Latin silex, 'flint' (originally silicium)
|
14
|
3
|
28.09
|
|
2.33
|
1687.00
|
3538.00
|
0.71
|
1.90
|
282000.00
|
|
Seaborgium
|
Sg
|
106
|
Transition metal
|
Glenn T. Seaborg, scientist
|
6
|
7
|
|
|
-35.00
|
|
|
|
|
0.00
|
|
Selenium
|
Se
|
34
|
Reactive nonmetal
|
the Greek selene, 'moon'
|
16
|
4
|
78.97
|
0.01
|
4.81
|
453.00
|
958.00
|
0.32
|
2.55
|
0.05
|
|
Scandium
|
Sc
|
21
|
Transition metal
|
Scandia, the Latin name for Scandinavia
|
3
|
4
|
44.96
|
0.00
|
2.99
|
1814.00
|
3109.00
|
0.57
|
1.36
|
22.00
|
|
Antimony
|
Sb
|
51
|
Metalloid
|
uncertain: perhaps from the Greek anti, 'against', and monos, 'alone', or the Old French antimoine, 'Monk's bane' (stibium in Latin)
|
15
|
5
|
121.76
|
0.00
|
6.69
|
903.78
|
1860.00
|
0.21
|
2.05
|
0.20
|
|
Sulfur
|
S
|
16
|
Reactive nonmetal
|
the Latin sulphur, 'fire and brimstone'
|
16
|
3
|
32.06
|
|
2.07
|
388.36
|
717.87
|
0.71
|
2.58
|
350.00
|
|
Ruthenium
|
Ru
|
44
|
Transition metal
|
Ruthenia, the New Latin name for Russia
|
8
|
5
|
101.07
|
0.02
|
12.37
|
2607.00
|
4423.00
|
0.24
|
2.20
|
0.00
|
|
Radon
|
Rn
|
86
|
Noble gas
|
From radium, as it was first detected as an emission from radium during radioactive decay
|
18
|
6
|
|
|
0.01
|
202.00
|
211.30
|
0.09
|
2.20
|
0.00
|
|
Rhodium
|
Rh
|
45
|
Transition metal
|
the Greek rhodos, meaning 'rose coloured'
|
9
|
5
|
102.91
|
0.00
|
12.41
|
2237.00
|
3968.00
|
0.24
|
2.28
|
0.00
|
|
Roentgenium
|
Rg
|
111
|
Unknown chemical properties
|
Wilhelm Conrad Röntgen, physicist
|
11
|
7
|
|
|
-28.70
|
|
|
|
|
0.00
|