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43
  Tc  
98.000000
Technetium
      


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Name: Technetium
Symbol: Tc
Atomic Number: 43
AtomicWeight: 98.000000
Family: transition metals
CAS RN: 7440-26-8
Description: A silvery grey metal
State (25 °C): Solid
Melting Point: 2430 °K
Boiling Point: 4538 °K
Density: 11.5 g/cm3
Oxidation states: +4,+6,+7
Electron Configuration: [Kr] 4d65s1
Radius: 135 pm (Covalent)
Electronegativity: 1.9 (Pauling Scale)

1st Ionization Energy: 702 KJ/mole
2nd Ionization Energy: 1470 KJ/mole
3rd Ionization Energy: 2850 KJ/mole

      



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