Gordon England Surface Engineering Forum

Periodic Chart of the Elements

Links to Tables showing Periodic Element Groups.

[ Alkali Metals ] [ Alkaline Earth Metals ] [ Blocks ] [ Gases ] [ Halogens ] [ Lanthanides/Actinides ] [ Liquids (stp) ] [ Main Group ] [ Metalloids ] [ Metals ] [ Noble Gases ] [ Non-Metals ] [ Solids (stp) ] [ Transition Metals ]

Alkali Metals

The alkali metals are a series of elements comprising: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). Note that hydrogen, although nominally placed in the same group, rarely exhibits behavior comparable to the alkali metals (Under extremely high pressure, hydrogen can become metallic and then behaves like an alkali metal).

The alkali metals are all highly reactive and tend not to be found in elemental form in nature.

Alkali metals have the lowest ionisation energy in their respective periods, as removing the single electron from the outermost shell gives them the stable noble gas configuration. But their second ionisation potentials are very high, as removing an electron from a species having a noble gas configuration is very difficult.

       
Group***

Period
1
IA
1A
2
IIA
2A
3
IIIB
3B
4
IVB
4B
5
VB
5B
6
VIB
6B
7
VIIB
7B
8
VIII
8
9
VIII
8
10
VIII
8
11
IB
1B
12
IIB
2B
13
IIIA
3A
14
IVA
4A
15
VA
5A
16
VIA
6A
17
VIIA
7A
18
VIIIA
8A
11
H

1.008
2
He
4.003
23
Li
6.941
4
Be

9.012
5
B
10.81
6
C
12.01
7
N
14.01
8
O
16.00
9
F
19.00
10
Ne
20.18
311
Na

22.99
12
Mg

24.31
13
Al
26.98
14
Si
28.09
15
P
30.97
16
S
32.07
17
Cl
35.45
18
Ar
39.95
419
K
39.10
20
Ca
40.08
21
Sc
44.96
22
Ti
47.88
23
V
50.94

24
Cr
52.00

25
Mn
54.94

26
Fe
55.85
27
Co
58.47
28
Ni
58.69

29
Cu
63.55

30
Zn
65.39
31
Ga
69.72
32
Ge
72.59
33
As
74.92
34
Se
78.96
35
Br
79.90
36
Kr
83.80
537
Rb
85.47
38
Sr
87.62
39
Y
88.91
40
Zr
91.22
41
Nb
92.91
42
Mo
95.94
43
Tc
(98)
44
Ru
101.1
45
Rh
102.9
46
Pd
106.4
47
Ag
107.9
48
Cd
112.4
49
In
114.8
50
Sn
118.7
51
Sb
121.8
52
Te
127.6
53
I
126.9
54
Xe
131.3
655
Cs
132.9
56
Ba
137.3

*
72
Hf
178.5
73
Ta
180.9
74
W
183.9
75
Re
186.2
76
Os
190.2
77
Ir
190.2
78
Pt
195.1
79
Au
197.0
80
Hg
200.5
81
Tl
204.4
82
Pb
207.2
83
Bi
209.0
84
Po
(209)
85
At
(210)
86
Rn
(222)
787
Fr
(223)
88
Ra
(226)

**
104
Rf
(261)
105
Db
(262)
106
Sg
(266)
107
Bh
(264)
108
Hs
(269)
109
Mt
(268)
110
Ds
(281)
111
Rg
(272)
112
Uub
(285)
113
Uut
(284)
114
Uuq
(289)
115
Uup
(288)
116
Uuh
(292)
117
Uus
()
118
Uuo
(294)
 

 

Lanthanide Series*
(Lanthanoid)
57
La
138.9
58
Ce
140.1
59
Pr
140.9
60
Nd
144.2
61
Pm
(145)
62
Sm
150.4
63
Eu
152.0
64
Gd
157.3
65
Tb
158.9
66
Dy
162.5
67
Ho
164.9
68
Er
167.3
69
Tm
168.9
70
Yb
173.0
71
Lu
175.0
Actinide Series**
(Actinoids)
89
Ac
(227)
90
Th
232.0
91
Pa
(231)
92
U
(238)
93
Np
(237)
94
Pu
(244)
95
Am
(243)
96
Cm
(247)
97
Bk
(247)
98
Cf
(251)
99
Es
(252)
100
Fm
(257)
101
Md
(258)
102
No
(259)
103
Lr
(262)

***Groups are by 3 notation conventions.





Google
 



Alternative Site Recommended for Users of Netscape Navigator and Browsers Not Displaying this Page Properly


© Copyright Gordon England