|
Neptunium
|
Np
|
93
|
Actinide
|
Neptune, the eighth planet in the Solar System
|
|
7
|
|
|
20.45
|
917.00
|
4273.00
|
|
1.36
|
0.00
|
|
Polonium
|
Po
|
84
|
Post-transition metal
|
Named after the home country of Marie Curie (Polonia, Latin for Poland), who is also the discoverer of Radium
|
16
|
6
|
|
|
9.32
|
527.00
|
1235.00
|
|
2.00
|
0.00
|
|
Hassium
|
Hs
|
108
|
Transition metal
|
Hesse, Germany, where the element was first synthesized
|
8
|
7
|
|
|
-40.70
|
|
|
|
|
0.00
|
|
Bohrium
|
Bh
|
107
|
Transition metal
|
Niels Bohr, physicist
|
7
|
7
|
|
|
-37.10
|
|
|
|
|
0.00
|
|
Seaborgium
|
Sg
|
106
|
Transition metal
|
Glenn T. Seaborg, scientist
|
6
|
7
|
|
|
-35.00
|
|
|
|
|
0.00
|
|
Dubnium
|
Db
|
105
|
Transition metal
|
Dubna, Russia
|
5
|
7
|
|
|
-29.30
|
|
|
|
|
0.00
|
|
Copernicium
|
Cn
|
112
|
Post-transition metal
|
Nicolaus Copernicus, astronomer
|
12
|
7
|
|
|
-23.70
|
|
357.00
|
|
|
0.00
|
|
Rutherfordium
|
Rf
|
104
|
Transition metal
|
Ernest Rutherford, chemist and physicist
|
4
|
7
|
|
|
-23.20
|
-2400.00
|
-5800.00
|
|
|
0.00
|
|
Astatine
|
At
|
85
|
Metalloid
|
the Greek astatos, 'unstable'
|
17
|
6
|
|
|
7.00
|
575.00
|
610.00
|
|
2.20
|
0.00
|
|
Tennessine
|
Ts
|
117
|
Unknown chemical properties
|
Tennessee, United States
|
17
|
7
|
|
|
-7.20
|
-723.00
|
-883.00
|
|
|
0.00
|