a technetium bone scan by J. Wallis, M.D.

Tc - Technetium

Technetium was discovered platinum ore from Columbia using x-ray spectroscopy by Walter Noddack and Ida Tacke in Berlin. The element was artificially produced in 1937 by Emilio Segrè and Carlo Perrier in Berkeley. Technetium is used for medical scintigraphic imaging.

Atomic number - 43 Density g/mL 11 .5

Atomic weight u 98 Melting point K 2473

Bonding radius A 1 .27 Boiling point K 4538

Atomic radius A 1 .95 Heat of vaporization kJ/mol 660

Ionization Potential V 7 .28 Heat of fusion kJ/mol 24

Electronegativity - 1 .9 Specific heat J/gK 0 .21

The oxide is a strong acid.
Crystal are hexagonal.

Electron config. : [Kr] 4d⁵ 5s²

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Isotopes of Tc: Click mass number for decay process, product for element page.

088
6.4 sec
EC,10.100 MeV
Mo-88
87.932796 089
12.8 sec
EC,7.510 MeV
Mo-89
88.927546 090
8.7 sec
EC,9.100 MeV
Mo-90
89.923778 091
3.14 min
EC,6.220 MeV
Mo-91
90.918421 092
4.23 min
EC,7.870 MeV
Mo-92
91.915254 093
2.75 hr
EC,3.201 MeV
Mo-93
92.910248 094
293 min
EC,4.256 MeV
Mo-94
93.909655

095
20.0 hr
EC,1.691 MeV
Mo-95
94.907656 096
4.28 da
EC,2.973 MeV
Mo-96
95.907869 096a
51.5 min
EC,3.007 MeV
Mo-96
95.907906 097
2.6E+6 yr
EC,1.934 MeV
Mo-97
96.906364 098
4.2E+6 yr
B-,1.796 MeV
Ru-98
97.907214 099
2.111E+5 yr
B-,1.357 MeV
Ru-99
98.906253 100
15.8 sec
B-,3.202 MeV
Ru-100
99.907656

101
14.22 min
B-,1.614 MeV
Ru-101
100.90731 102
5.28 sec
B-,4.530 MeV
Ru-102
101.90921 103
54.2 sec
B-,2.660 MeV
Ru-103
102.90917 104
18.3 min
B-,5.600 MeV
Ru-104
103.91144 105
7.6 min
B-,3.640 MeV
Ru-105
104.91165 106
35.6 sec
B-,6.547 MeV
Ru-106
105.91435 107
21.2 sec
B-,4.820 MeV
Ru-107
106.91508

108
5.17 sec
B-,7.720 MeV
Ru-108
107.91847 109
0.87 sec
B-,5.990 MeV
Ru-109
108.91962 110
0.92 sec
B-,8.800 MeV
Ru-110
109.92334 111
0.30 sec
B-,7.000 MeV
Ru-111
110.92506 112
0.28 sec
B-,10.000 MeV
Ru-112
111.92925 113
130 msec
B-,8.200 MeV
Ru-113
112.93129

MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.

Atomic number	-	43		Density	g/mL	11	.5
Atomic weight	u	98		Melting point	K	2473
Bonding radius	A	1	.27	Boiling point	K	4538
Atomic radius	A	1	.95	Heat of vaporization	kJ/mol	660
Ionization Potential	V	7	.28	Heat of fusion	kJ/mol	24
Electronegativity	-	1	.9	Specific heat	J/gK	0	.21
The oxide is a strong acid.				Crystal are hexagonal.
Electron config. : [Kr] 4d⁵ 5s²
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088 6.4 sec EC,10.100 MeV Mo-88 87.932796	089 12.8 sec EC,7.510 MeV Mo-89 88.927546	090 8.7 sec EC,9.100 MeV Mo-90 89.923778	091 3.14 min EC,6.220 MeV Mo-91 90.918421	092 4.23 min EC,7.870 MeV Mo-92 91.915254	093 2.75 hr EC,3.201 MeV Mo-93 92.910248	094 293 min EC,4.256 MeV Mo-94 93.909655
095 20.0 hr EC,1.691 MeV Mo-95 94.907656	096 4.28 da EC,2.973 MeV Mo-96 95.907869	096a 51.5 min EC,3.007 MeV Mo-96 95.907906	097 2.6E+6 yr EC,1.934 MeV Mo-97 96.906364	098 4.2E+6 yr B-,1.796 MeV Ru-98 97.907214	099 2.111E+5 yr B-,1.357 MeV Ru-99 98.906253	100 15.8 sec B-,3.202 MeV Ru-100 99.907656
101 14.22 min B-,1.614 MeV Ru-101 100.90731	102 5.28 sec B-,4.530 MeV Ru-102 101.90921	103 54.2 sec B-,2.660 MeV Ru-103 102.90917	104 18.3 min B-,5.600 MeV Ru-104 103.91144	105 7.6 min B-,3.640 MeV Ru-105 104.91165	106 35.6 sec B-,6.547 MeV Ru-106 105.91435	107 21.2 sec B-,4.820 MeV Ru-107 106.91508
108 5.17 sec B-,7.720 MeV Ru-108 107.91847	109 0.87 sec B-,5.990 MeV Ru-109 108.91962	110 0.92 sec B-,8.800 MeV Ru-110 109.92334	111 0.30 sec B-,7.000 MeV Ru-111 110.92506	112 0.28 sec B-,10.000 MeV Ru-112 111.92925	113 130 msec B-,8.200 MeV Ru-113 112.93129
MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass