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          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

  Chemistry 5






Previous page

1
H
2
He
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
55
Cs
56
Ba
57-
71
72
Hf
73
Ta
74
W
75
Rn
76
Os
77
Ir
78
Pl
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
87
Fr
88
Ra
89-
103
104
Rf
105
Db
106
Sg
Bh
108
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Uut
114
Fl
115
Uup
116
Lv
117
Uus
118
Uuo


Lithium


Sodium


Potassium


Rubidium


Caesium


Francium

They are known as alkali metals. They distinguish themselves by having one single electron on the extreme outer shell and they try, with sometimes violent reactions, to 'get rid of' the apparently not very strongly bonded electron. Thus, e.g., is the nature of posassiumand one of the reasons why the fire department should not always fight fires using water. Never bring potassium and water directly together, you'll set of the fireworks.

Flame colouring
LithiumRed
PotassiumYellow
KaliumViolet
RubidiumRed
CaesiumBlue-violet

If, e.g., one cuts postassium, which is soft, the surface has, like the other alkali metals, has a silvery shine to it.



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Translator: Don Leslie - Email: lesdon@t-online.de

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