|
Rhenium
|
Re
|
75
|
Transition metal
|
Rhenus, the Latin name for the river Rhine
|
7
|
6
|
186.21
|
0.00
|
21.02
|
3459.00
|
5869.00
|
0.14
|
1.90
|
0.00
|
|
Krypton
|
Kr
|
36
|
Noble gas
|
the Greek kryptos, 'hidden'
|
18
|
4
|
83.80
|
0.00
|
0.00
|
115.79
|
119.93
|
0.25
|
3.00
|
0.00
|
|
Xenon
|
Xe
|
54
|
Noble gas
|
the Greek xenos, 'strange'
|
18
|
5
|
131.29
|
0.01
|
0.01
|
161.40
|
165.03
|
0.16
|
2.60
|
0.00
|
|
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
|
|
Radium
|
Ra
|
88
|
Alkaline earth metal
|
the Latin radius, 'ray'
|
2
|
7
|
|
|
5.50
|
973.00
|
2010.00
|
0.09
|
0.90
|
0.00
|
|
Francium
|
Fr
|
87
|
Alkali metal
|
Francia, the New Latin name for France
|
1
|
7
|
|
|
1.87
|
300.00
|
950.00
|
|
0.70
|
0.00
|
|
Lawrencium
|
Lr
|
103
|
Actinide
|
Ernest O. Lawrence, physicist
|
|
7
|
|
|
-15.60
|
-1900.00
|
|
|
1.30
|
0.00
|
|
Actinium
|
Ac
|
89
|
Actinide
|
the Greek aktis, 'ray'
|
3
|
7
|
|
|
10.07
|
1323.00
|
3471.00
|
0.12
|
1.10
|
0.00
|
|
Californium
|
Cf
|
98
|
Actinide
|
California, where the element was first synthesized
|
|
7
|
|
|
15.10
|
1173.00
|
-1743.00
|
|
1.30
|
0.00
|
|
Technetium
|
Tc
|
43
|
Transition metal
|
the Greek tekhnètos meaning 'artificial'
|
7
|
5
|
|
|
11.50
|
2430.00
|
4538.00
|
|
1.90
|
0.00
|