Technetium Element in Periodic Table | Atomic Number Atomic Mass
Technetium is a chemical element and it is a member of group 7 and period 5 in the periodic table. The atomic number of Technetium is 43 and it is indicated by symbol is Tc. Tc located between rhenium and manganese in the seventh group. It is a silvery-gray radioactive metal with an appearance similar to platinum. It is dissolves in nitric acid, aqua regia and concentrated sulphuric acid. The most stable isotopes of technetium are 97Tc, 98Tc and 99Tc.
Uses Of Technetium Element:
- Technetium is used in steel alloys
- Technetium-99m is widely used for medical diagnostic studies
- Technetium is a remarkable corrosion inhibitor for steel, and adding very small amounts can provide excellent protection.
- It is also an excellent superconductor at 11K (-439.9 F / -262.1 C) and below.
Technetium Element Information:
Discovered by: Emilio Segrè and Carlo Perrier
Atomic number: 43
Relative atomic mass: 
Electron configuration: [Kr] 4d5 5s2
Other elements in the same block:
Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Copper, Zinc, Yttrium, Zirconium, Niobium, Molybdenum, Ruthenium, Rhodium, Palladium, Silver, Cadmium, Lanthanum, Hafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Actinium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium and Copernicium are the elements in the same block.
Period: period 5
Other elements in the same period:
Group: group 7
Other elements in the same group:
Other elements in the same orbital:
Key isotopes: -
Melting point: 2157°C, 3915°F, 2430 K
Boiling point: 4262°C, 7704°F, 4535 K
Element category: transition metal
Density (g cm−3): 11
CAS number: 7440-26-8
Color: shiny gray metal
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