Periodic Table

Technetium

Atomic Number: 43

 
Overview
PropertyValueUnits

Atomic Mass

98

Density

11.5

g/cckg/m3lb/in3
Thermal Properties

Thermal Properties

PropertyValueUnits

Melting Point

2200°C

K°C°F°R

Boiling Point

4877°C

K°C°F°R

Critical Pressure

The critical pressure has not been determined for Technetium

Critical Temperature

The critical temperature has not been determined for Technetium

Heat of Fusion

23 kJ/mol

kJ/molcal/mol

Heat of Vaporization

550 kJ/mol

kJ/molcal/mol

Specific Heat

63 J/kg·K

J/kg·K

Thermal Conductivity

51 W/m·K

W/m·K
Electon Configuration

Electron Structure

[Kr] 4d5 5s2

Shell Arrangement

KLMNOPQ
281814100
LevelS OrbitalP OrbitalD OrbitalF Orbital
Level 1
Level 2
History

Year Discovered

1937

Isotopes
IsotopeCommon NameSymbolMassStatusAbundanceHalf-lifeDecay modeDecay EnergyNuclear SpinMagnetic Moment

Isotopic mass data for stable isotopes is from:
G. Audi, A.H. Wapstra in Nuclear Physics A, 1993, 565, 1-65
and
G. Audi, A.H.Wapstra in Nuclear Physics A, 1995, 595 409-480.

Natural abundance data is from:
K.J.R. Rosman, P.D.P. Taylor in Pure Appplied Chemistry, 1999, 71, 1593-1607.

 

Occurance
In the Universe0%
In the Sun0%
In Meteorites0%
In the Earth's Crust0%
In Seawater0%
In the Human Body0%
Models

Pictures, videos and 3D models of the element

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