Difference between revisions of "Technetium"

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{{Element | name=Technetium | symbol=Tc | anumber=43 | amass=97 amu | state=Solid | class=Metallic | cstructure=Hexagonal | color=Silvery-gray | date=1937 | discname=Carlo Perrier and Emillo G. Segre | origname=from the Greek ''tekhnetos'', meaning ''artificial''. | uses=Source of radiation for medical research. | obtained=Manufactured by bombarding [[Molybdenum]] with [[heavy hydrogen]] in a [[cyclotron]]. Only minute quantities have been found outside the laboratory, as a by-product of the fission of Uranium-238. }}
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{{Element | name=Technetium | symbol=Tc | anumber=43 | amass=97 amu | state=Solid | class=Metallic | cstructure=Hexagonal | stableisotopes=0 | color=Silvery-gray | date=1937 | discname=Carlo Perrier and Emillo G. Segre | origname=from the Greek ''tekhnetos'', meaning ''artificial''. | uses=Source of radiation for medical research. | obtained=Manufactured by bombarding [[Molybdenum]] with [[heavy hydrogen]] in a [[cyclotron]]. Only minute quantities have been found outside the laboratory, as a by-product of the fission of Uranium-238. }}
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'''Technetium''' ''(tek-NEE-she-em)'' is a [[radioactive]], silvery-grey synthetic [[metal]].
  
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==Additional Properties==
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Melting Point: 3915 °F (2157 °C or 2430 K)
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Boiling Point: 7709 °F (4265 °C or 4538 K)
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Density: 11 grams per cubic centimeter
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(Beta) Half-Life: 4.2 million years
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==History==
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In 1937, the Italian chemists Carlo Perrier and Emilio Segrè isolated Technetium using a cyclotron; it was the first artificially produced (synthetic) element.  Since this element has such a short half-life, it cannot be found in nature.<ref>http://education.jlab.org/itselemental/ele043.html</ref>  Before this time, it had been predicted but never found.<ref>http://www.newworldencyclopedia.org/entry/Technetium</ref>
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==Uses==
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The primary use of Technetium is for medical exploration as a tracer.  It can also be added to steel for corrosion resistance.  This not usually practical, however, since it is a radioactive material.<ref>http://www.rsc.org/periodic-table/element/43/technetium</ref>
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==References==
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<references />
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==External Resources==
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http://www.rsc.org/periodic-table/element/43/technetium
 
[[Category:Elements]]
 
[[Category:Elements]]
 
[[Category:Metals]]
 
[[Category:Metals]]
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{{Template:Periodic table}}
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{{Periodic table}}

Revision as of 16:03, June 28, 2016

Technetium
Properties
Atomic symbol Tc
Atomic number 43
Classification Metallic
Atomic mass 97 amu
Number of Stable Isotopes 0
Other Information
Date of discovery 1937
Name of discoverer Carlo Perrier and Emillo G. Segre
Name origin from the Greek tekhnetos, meaning artificial.
Uses Source of radiation for medical research.
Obtained from Manufactured by bombarding Molybdenum with heavy hydrogen in a cyclotron. Only minute quantities have been found outside the laboratory, as a by-product of the fission of Uranium-238.

Technetium (tek-NEE-she-em) is a radioactive, silvery-grey synthetic metal.

Additional Properties

Melting Point: 3915 °F (2157 °C or 2430 K)

Boiling Point: 7709 °F (4265 °C or 4538 K)

Density: 11 grams per cubic centimeter

(Beta) Half-Life: 4.2 million years

History

In 1937, the Italian chemists Carlo Perrier and Emilio Segrè isolated Technetium using a cyclotron; it was the first artificially produced (synthetic) element. Since this element has such a short half-life, it cannot be found in nature.[1] Before this time, it had been predicted but never found.[2]

Uses

The primary use of Technetium is for medical exploration as a tracer. It can also be added to steel for corrosion resistance. This not usually practical, however, since it is a radioactive material.[3]

References

  1. ↑ http://education.jlab.org/itselemental/ele043.html
  2. ↑ http://www.newworldencyclopedia.org/entry/Technetium
  3. ↑ http://www.rsc.org/periodic-table/element/43/technetium

External Resources

http://www.rsc.org/periodic-table/element/43/technetium

Periodic Table of the Elements
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1
H
1.008
2
He
4.003
3
Li
6.939
4
Be
9.0122
5
B
10.811
6
C
12.011
7
N
14.007
8
O
15.999
9
F
18.998
10
Ne
10.183
11
Na
22.99
12
Mg
24.312
13
Al
26.982
14
Si
28.086
15
P
30.974
16
S
32.064
17
Cl
35.453
18
Ar
39.948
19
K
39.102
20
Ca
40.08
21
Sc
44.956
22
Ti
47.9
23
V
50.942
24
Cr
51.996
25
Mn
54.938
26
Fe
55.847
27
Co
58.933
28
Ni
58.71
29
Cu
63.546
30
Zn
65.37
31
Ga
69.72
32
Ge
72.59
33
As
74.922
34
Se
78.96
35
Br
79.904
36
Kr
83.8
37
Rb
85.47
38
Sr
87.62
39
Y
88.905
40
Zr
91.22
41
Nb
92.906
42
Mo
95.94
43
Tc
[97]
44
Ru
101.07
45
Rh
102.91
46
Pd
106.4
47
Ag
107.87
48
Cd
112.4
49
In
114.82
50
Sn
118.69
51
Sb
121.75
52
Te
127.6
53
I
126.9
54
Xe
131.3
55
Cs
132.91
56
Ba
137.34
57*
La
138.91
72
Hf
178.49
73
Ta
180.95
74
W
183.85
75
Re
186.2
76
Os
190.2
77
Ir
192.2
78
Pt
195.09
79
Au
196.97
80
Hg
200.59
81
Tl
204.37
82
Pb
207.19
83
Bi
208.98
84
Po
210
85
At
210
86
Rn
222
87
Fr
215
88
Ra
226.03
89**
Ac
227.03
104
Rf
[261]
105
Db
[262]
106
Sg
[266]
107
Bh
[264]
108
Hs
[265]
109
Mt
[268]
110
Dt
[271]
111
Rg
[272]
112
Cn
[277]
113
Nh
[284]
114
Fv
[289]
115
Mc
[288]
116
Lv
[292]
117
Ts
[293]
118
Og
[294]
 
*Lanthanides
58
Ce
140.12
59
Pr
140.91
60
Nd
144.24
61
Pm
145
62
Sm
150.35
63
Eu
151.96
64
Gd
157.25
65
Tb
158.92
66
Dy
162.5
67
Ho
164.93
68
Er
167.26
69
Tm
168.93
70
Yb
173.04
71
Lu
174.97
 
**Actinides
90
Th
232.04
91
Pa
231
92
U
238.03
93
Np
237.05
94
Pu
239.05
95
Am
241.06
96
Cm
244.06
97
Bk
249.08
98
Cf
252.08
99
Es
252.08
100
Fm
257.1
101
Md
258.1
102
No
259.1
103
Lr
262.11
 
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