We elaborate the uses of Technetium and atomic properties with characteristics. Technetium is a chemical element with a silvery metallic appearance with atomic number 43. Its symbol is Tc and it belongs to the group of transition metals and its usual state in nature is solid. Technetium is located at position 43 on the periodic table.
On this page you can discover the chemical properties of technetium and information about technetium and other elements of the periodic table such as manganese, rhenium, molybdenum or ruthenium. You will also learn what technetium is for and you will know its uses through its properties associated with technetium such as its atomic number or the usual state in which technetium can be found.
You will be able to see qualities of technetium such as its melting and boiling point, its magnetic properties or what its chemical symbol is. In addition, here you will find information about its atomic properties such as the distribution of electrons in technetium atoms and other properties.
For some elements, part of this information is unknown. In these cases we show the properties attributed to them.
The transition metals, also called transition elements, is the group to which technetium belongs. In this group of chemical elements to which technetium belongs, are those located in the central part of the periodic table, specifically in block d. Among the characteristics that technetium has, as well as those of the rest of transition metals, is to include in its electronic configuration the d orbital, partially filled with electrons. Properties of this type of metal, among which technetium is found, are its high hardness, having high boiling and melting points and being good conductors of electricity and heat.
The state of technetium in its natural form is solid (paramagnetic). Technetium is a silver metallic chemical element and belongs to the group of transition metals. The atomic number of technetium is 43. The chemical symbol for technetium is Tc. Technetium’s melting point is 2430 degrees Kelvin or 2157.85 degrees Celsius or degrees Celsius. The boiling point of technetium is 4538 degrees Kelvin or 4265.85 degrees Celsius or degrees Celsius.
Technetium-99m (metastable) gamma emitter is widely used for medical diagnostic studies. Various chemical forms are used to obtain images of different parts of the body.
Technetium is a remarkable corrosion inhibitor for steel, and the addition of very small amounts can provide excellent protection. This use is limited to closed systems as technetium is radioactive.
Atomic properties of technetium
The atomic mass of an element is determined by the total mass of neutrons and protons that can be found in a single atom belonging to this element. As for the position where to find technetium within the periodic table of elements, technetium is in group 7 and period 5. Technetium has an atomic mass of  (0) u u.
The electron configuration of technetium is [Kr] 4d5 5s2. The electronic configuration of the elements determines the way in which the electrons are structured in the atoms of an element. The mean radius of technetium is 135 pm, its atomic radius or Bohr radius is 183 pm, and its covalent radius is 156 pm. Technetium has a total of 43 electrons whose distribution is as follows: In the first layer it has 2 electrons, in the second it has 8 electrons, in its third layer it has 18 electrons, in the fourth, 13 electrons and in the fifth layer it has 2 electrons.
Below you can see a table that shows the main characteristics of technetium.
|Density||11500 kg / m3|
|Atomic mass|| (0) uu|
|Medium radius||135 pm|
|Covalent radius||156 pm|
|Electronic configuration||[Kr] 4d5 5s2|
|Electrons per shell||2, 8, 18, 13, 2|
|Oxidation states||7, 6, 5,  4,  3,  1 |
|Heat of fusion||24 kJ / mol|
|Vapor pressure||0.0229 Pa at 2473 K|
|Specific heat||210 J / (Kkg)|
|Electric conductivity||6.7106S / m|
|Thermal conductivity||50.6 W / (K m)|