Atomic NumberAtomic Number of Technetium
Atomic Number of Technetium is 43.
Chemical symbol for Technetium is Tc. Number of protons in Technetium is 43. Atomic weight of Technetium is 98 u or g/mol. Melting point of Technetium is 2172 °C and its the boiling point is 5030 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Technetium
Technetium is one of the latest discovered elements, which became known only close to the middle of the last century. The existence of this element was predicted by Mendeleev, and it was discovered by a group of Italian scientists. It is a radioactive metal of light grey color, and its name is derived from a Greek word meaning artificial. It is very toxic and has very high radioactivity, and it also has no importance for living organisms. It does not exist in its pure form on our planet. This chemical element has applications in nuclear chemistry, biology and bio chemistry, medicine, and especially researches. It is used as a catalyst and is highly valued for its outstanding corrosion protection properties.
Properties of Technetium Element
| Atomic Number (Z) | 43 |
|---|---|
| Atomic Symbol | Tc |
| Group | 7 |
| Period | 5 |
| Atomic Weight | 98 u |
| Density | 11.5 g/cm3 |
| Melting Point (K) | 2430 K |
| Melting Point (℃) | 2172 °C |
| Boiling Point (K) | 4538 K |
| Boiling Point (℃) | 5030 °C |
| Heat Capacity | |
| Abundance | ~ 3×10−9 mg/kg |
| State at STP | Solid |
| Occurrence | Transient |
| Description | Transition metal |
| Electronegativity (Pauling) χ | 1.9 |
| Ionization Energy (eV) | 7.28 |
| Atomic Radius | 135pm |
| Covalent Radius | 156pm |
| Valence Electrons | 1 |
| Year of Discovery | 1937 |
| Discoverer | Perrier and Segrè |