Atomic Number of Technetium

Technetium Atomic Number

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 Year

About 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 SymbolTc
Atomic Weight98 u
Density11.5 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 STPSolid
DescriptionTransition metal
Electronegativity (Pauling) χ1.9
Ionization Energy (eV)7.28
Atomic Radius135pm
Covalent Radius156pm
Valence Electrons1
Year of Discovery1937
DiscovererPerrier and Segrè

What is the Boiling Point of Technetium?

Technetium boiling point is 5030 °C. Boiling point of Technetium in Kelvin is 4538 K.

What is the Melting Point of Technetium?

Technetium melting point is 2172 °C. Melting point of Technetium in Kelvin is 2430 K.

How Abundant is Technetium?

Abundant value of Technetium is ~ 3×10−9 mg/kg.

What is the State of Technetium at Standard Temperature and Pressure (STP)?

State of Technetium is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Technetium Discovered?

Technetium was discovered in 1937.