|
Actinium
|
Ac
|
89
|
Actinide
|
the Greek aktis, 'ray'
|
3
|
7
|
|
|
10.07
|
1323.00
|
3471.00
|
0.12
|
1.10
|
0.00
|
|
Aluminium
|
Al
|
13
|
Post-transition metal
|
from alumina, a compound (originally alumium)
|
13
|
3
|
26.98
|
0.00
|
2.70
|
933.47
|
2792.00
|
0.90
|
1.61
|
82300.00
|
|
Americium
|
Am
|
95
|
Actinide
|
The Americas, as the element was first synthesized on the continent, by analogy with europium
|
|
7
|
|
|
13.69
|
1449.00
|
2880.00
|
|
1.13
|
0.00
|
|
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
|
|
Argon
|
Ar
|
18
|
Noble gas
|
the Greek argos, 'idle'
|
18
|
3
|
39.95
|
0.00
|
0.00
|
83.80
|
87.30
|
0.52
|
|
3.50
|
|
Arsenic
|
As
|
33
|
Metalloid
|
English word (Latin arsenicum)
|
15
|
4
|
74.92
|
0.00
|
5.78
|
1090.00
|
887.00
|
0.33
|
2.18
|
1.80
|
|
Astatine
|
At
|
85
|
Metalloid
|
the Greek astatos, 'unstable'
|
17
|
6
|
|
|
7.00
|
575.00
|
610.00
|
|
2.20
|
0.00
|
|
Barium
|
Ba
|
56
|
Alkaline earth metal
|
the Greek barys, 'heavy'
|
2
|
6
|
137.33
|
0.01
|
3.59
|
1000.00
|
2170.00
|
0.20
|
0.89
|
425.00
|
|
Berkelium
|
Bk
|
97
|
Actinide
|
Berkeley, California, where the element was first synthesized, by analogy with terbium
|
|
7
|
|
|
14.79
|
1259.00
|
2900.00
|
|
1.30
|
0.00
|
|
Beryllium
|
Be
|
4
|
Alkaline earth metal
|
beryl, a mineral
|
2
|
2
|
9.01
|
0.00
|
1.85
|
1560.00
|
2742.00
|
1.83
|
1.57
|
2.80
|