|
Protactinium
|
Pa
|
91
|
Actinide
|
the Greek protos, 'first', and actinium, which is produced through the radioactive decay of protactinium
|
|
7
|
231.04
|
0.00
|
15.37
|
1841.00
|
4300.00
|
|
1.50
|
0.00
|
|
Californium
|
Cf
|
98
|
Actinide
|
California, where the element was first synthesized
|
|
7
|
|
|
15.10
|
1173.00
|
-1743.00
|
|
1.30
|
0.00
|
|
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
|
|
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
|
|
Mercury
|
Hg
|
80
|
Post-transition metal
|
the New Latin name mercurius, named after the Roman god (Hg from former name hydrargyrum, from Greek hydr-, 'water', and argyros, 'silver')
|
12
|
6
|
200.59
|
0.00
|
13.53
|
234.43
|
629.88
|
0.14
|
2.00
|
0.09
|
|
Curium
|
Cm
|
96
|
Actinide
|
Pierre Curie, a physicist, and Marie Curie, a physicist and chemist, named after great scientists by analogy with gadolinium
|
|
7
|
|
|
13.51
|
1613.00
|
3383.00
|
|
1.28
|
0.00
|
|
Hafnium
|
Hf
|
72
|
Transition metal
|
Hafnia, the New Latin name for Copenhagen
|
4
|
6
|
178.49
|
0.02
|
13.31
|
2506.00
|
4876.00
|
0.14
|
1.30
|
3.00
|
|
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
|
|
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
|
|
Palladium
|
Pd
|
46
|
Transition metal
|
the then recently discovered asteroid Pallas, considered a planet at the time
|
10
|
5
|
106.42
|
0.01
|
12.02
|
1828.05
|
3236.00
|
0.24
|
2.20
|
0.02
|