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Some technetium characteristics:
Atomic number: 43
Standardized atomic weight: 98
Appearance: silver gray
State of matter: solid transition metal
Melting point: 2 157 0C
Boiling point: 4 265 0C
Density: 11 g/cm3
Heat of fusion: 32,9 kJ/mol
Molar heat capacity: 24,27 kJ/mol
First ionization energy: 702 kJ/mol
Pauling electronegativity: 1,9
Empirical atomic radius: 136 pm
Thermal conductivity: 50,6 W/m.K
Electrical resistivity: 200 nanoohm.m
Paramagnetic
Superconductor: under 7,46 K
Hexagonal close packed structure
Brinell hardness: 151
Electron configuration: [Kr]4d5.5s2 Technetium react with oxygen, halogens, oxygen, sulfur, selenium, tellurium, boron, carbon etc. and can form alloys with metals.
Technetium is dissolved in inorganic acids excepting hydrochloric acid.
The Pauling electronegativity is 1,9. Technetium oxidation states are between -1 and +7; the most usual valences are +3, +4 and +7.
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Predict two properties of technetium?
Technetium is a metal.Technetium is radioactive.
What is the odor for technetium?
Technetium is odorless.
Does technetium have a taste?
Technetium was not tasted !
How hard is technetium?
The Brinell hardness of technetium is 112.The Vickers hardness of technetium is 151.
What state is the technetium is in?
Technetium is a solid metal.
What characteristics does a normal technetium heart scan have?
If the technetium heart scan is normal, no technetium will show up in the heart.
Predict two properties of technetium?
Technetium is a metal.Technetium is radioactive.
What is the origin of the symbol of technetium?
The chemical symbol of technetium - Tc- is formed by two letters from the name.
What characteristics does an abnormal technetium heart scan have?
In an abnormal technetium heart scan, hot spots reveal damage to the heart. The larger the hot spots, the poorer the patient's prognosis.
How should patients be prepared for a technetium heart scan?
Two to three hours before the scan, technetium is injected into a vein in the patient's forearm.
Why is there no technetium in nature?
Technetium exist in nature only in ultratraces; being unstable technetium technetium was lost by radioactive decay.
Is technetium odorless?
Technetium is odorless.
Is technetium from Japan?
Technetium is not from Japan.
Why is technetium a metal?
Technetium is a metal.
What is the odor for technetium?
Technetium is odorless.
Does technetium have a taste?
Technetium was not tasted !
Is technetium hard?
The Brinell hardness of technetium is 112.The Vickers hardness of technetium is 151.
