Technetium element (Tc) is in group 7 and period 5 of a periodic table. Technetium is in the d-block and it is classified as a transition element on the periodic table.
There is a lot more information related to technetium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Technetium element (Information Table)
- Technetium element in Periodic table
- Facts about Technetium
- Properties of Technetium
- Uses of Technetium
Technetium Element (Information Table)
The important data related to technetium element is given in the table below.
|Appearance of technetium||Silvery gray metallic appearance|
|Atomic number of technetium||43|
|Symbol of technetium||Tc|
|Atomic mass of technetium (most stable isotope)||98 u|
|Protons, Neutrons & Electrons in technetium||Protons: 43, Neutrons: 55, Electrons: 43|
|State of technetium (at STP)||Solid|
|Group number of technetium in periodic table||7|
|Period number of technetium in periodic table||5|
|Block of technetium in periodic table||d-block|
|Category of technetium||Transition metal|
|Bohr model or Electrons per shell or Electrons arrangement in technetium||2, 8, 18, 13, 2|
|Electron configuration of technetium||[Kr] 4d5 5s2|
|Orbital diagram of technetium|
|Electronegativity of technetium (on pauling scale)||1.9|
|Atomic radius of technetium (van der Waals radius)||209 picometers|
|Density of technetium||11.5 g/cm3|
|1st ionization energy of technetium||7.28 eV|
|Melting point of technetium||2430 K or 2157 °C or 3915 °F|
|Boiling point of technetium||4538 K or 4265 °C or 7709 °F|
|Crystal structure of technetium||Hexagonal Close Packing (HCP)|
|Discovery of technetium||By Carlo Perrier and Emilio Segrè in 1973|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Technetium element in Periodic table
The Technetium element (Tc) has the atomic number 43 and is located in group 7 and period 5. Technetium is a metal and it is classified as a transition element.
Facts about technetium
Here are a few interesting facts about technetium element.
- The name “Technetium” came from the Greek word “technetos”, which means artificial.
- In the beginning, the name of the element was masurium, but later on it was named technetium.
- Technetium is very rare and it is believed to be present in different types of stars.
- Technetium is an artificial element that is prepared by humans in a laboratory.
- Technetium is the 1st laboratory made element on the periodic table.
Properties of technetium
Here is a list of some physical properties and chemical properties of technetium.
Physical properties of technetium
- Technetium has a silvery gray metallic appearance.
- The most stable isotope of technetium has an atomic mass of 98 u and its density is 11.5 g/cm3.
- The melting point and boiling point of technetium is 2430 K and 4538 K respectively.
- Technetium has a HCP crystal structure.
Chemical properties of technetium
- The electron configuration of technetium is [Kr] 4d5 5s2, and it has incomplete d-orbitals.
- Technetium is not soluble in HCl, but is soluble in HNO3 as well as concentrated H2SO4.
- The common oxidation states of technetium are +7, +5 and +4.
- Technetium is an artificially made element and it has some isotopes whose half-life is only a few hours and some isotopes have a half-life of 200,000 years to over a million years.
Uses of technetium
Here are some uses of the technetium element.
- Technetium can be used as a superconductor at the temperature below 11 K.
- Small amount of technetium is also added to steel manufacturing, which helps steel from corrosion.
- The isotope of technetium (i.e 99Tc) is used in medical radioactive isotope tests.