|
Potassium
|
K
|
19
|
Alkali metal
|
New Latin potassa, 'potash' (kalium in Latin)
|
1
|
4
|
39.10
|
0.00
|
0.86
|
336.53
|
1032.00
|
0.76
|
0.82
|
20900.00
|
|
Phosphorus
|
P
|
15
|
Reactive nonmetal
|
the Greek phoosphoros, 'carrying light'
|
15
|
3
|
30.97
|
0.00
|
1.82
|
317.30
|
550.00
|
0.77
|
2.19
|
1050.00
|
|
Rubidium
|
Rb
|
37
|
Alkali metal
|
the Latin rubidus, 'deep red'
|
1
|
5
|
85.47
|
0.00
|
1.53
|
312.46
|
961.00
|
0.36
|
0.82
|
90.00
|
|
Gallium
|
Ga
|
31
|
Post-transition metal
|
Gallia, the Latin name for France
|
13
|
4
|
69.72
|
0.00
|
5.91
|
302.91
|
2673.00
|
0.37
|
1.81
|
19.00
|
|
Caesium
|
Cs
|
55
|
Alkali metal
|
the Latin caesius, 'sky blue'
|
1
|
6
|
132.91
|
0.00
|
1.87
|
301.59
|
944.00
|
0.24
|
0.79
|
3.00
|
|
Francium
|
Fr
|
87
|
Alkali metal
|
Francia, the New Latin name for France
|
1
|
7
|
|
|
1.87
|
300.00
|
950.00
|
|
0.70
|
0.00
|
|
Bromine
|
Br
|
35
|
Reactive nonmetal
|
the Greek bromos, 'stench'
|
17
|
4
|
79.90
|
|
3.12
|
265.80
|
332.00
|
0.47
|
2.96
|
2.40
|
|
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
|
|
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
|
|
Chlorine
|
Cl
|
17
|
Reactive nonmetal
|
the Greek chloros, 'greenish yellow'
|
17
|
3
|
35.45
|
|
0.00
|
171.60
|
239.11
|
0.48
|
3.16
|
145.00
|