Indium element (In) is in group 13 and period 5 of a periodic table. Indium is in the p-block and it is classified as a post-transition element on the periodic table.
There is a lot more information related to indium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Indium element (Information Table)
- Indium element in Periodic table
- Facts about Indium
- Properties of Indium
- Uses of Indium
Indium Element (Information Table)
The important data related to indium element is given in the table below.
|Appearance of indium||Silvery gray lustrous appearance|
|Atomic number of indium||49|
|Symbol of indium||In|
|Atomic mass of indium||114.82 u|
|Protons, Neutrons & Electrons in indium||Protons: 49, Neutrons: 66, Electrons: 49|
|State of indium (at STP)||Solid|
|Group number of indium in periodic table||13|
|Period number of indium in periodic table||5|
|Block of indium in periodic table||p-block|
|Category of indium||Post transition element (boron group)|
|Bohr model or Electrons per shell or Electrons arrangement in indium||2, 8, 18, 18, 3|
|Electron configuration of indium||[Kr] 4d10 5s2 5p1|
|Orbital diagram of indium|
|Valence electrons in indium||3|
|Electronegativity of indium (on pauling scale)||1.78|
|Atomic radius of indium (van der Waals radius)||193 picometers|
|Density of indium||7.31 g/cm3|
|1st ionization energy of indium||5.786 eV|
|Main isotope of indium||115In|
|Melting point of indium||429.7 K or 156.5 °C or 313.8 °F|
|Boiling point of indium||2345 K or 2072 °C or 3762 °F|
|Crystal structure of indium||Tetragonal|
|Discovery of indium||By Hieronymous Theodor Richter and Ferdinand Reich (in 1863)|
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).
Indium element in Periodic table
The Indium element (In) has the atomic number 49 and is located in group 13 and period 5. Indium is a metal and it is classified as a post-transition element.
Facts about indium
Here are a few interesting facts about indium element.
- Indium was given its name from the Latin word “Indicum”, which means violet.
- Indium is the 61st most abundant element present in the earth’s crust.
- The concentration of indium in the earth’s crust is approximately 0.1 ppm.
- Canada produces around 75 tons of indium annually, which makes it a leading producer in the world.
Properties of indium
Here is a list of some physical properties and chemical properties of indium.
Physical properties of indium
- Indium has a silvery-gray lustrous appearance.
- Indium is a soft metal. It also produces a cracking sound when it is bent.
- There are many isotopes of indium, but the most abundant isotope is 115In.
- The melting point and boiling point of indium is 429.7 K and 2345 K respectively.
- The crystal structure of indium is tetragonal.
- Indium has an atomic mass 114.82 u and its density is 7.31 g/cm3.
Chemical properties of indium
- There are 3 valence electrons of indium and it loses these 3 electrons during a chemical reaction.
- Indium does not react with water.
- The electronegativity of indium is 1.78 on a pauling scale.
- The first ionization energy of indium is 5.786 eV.
Uses of indium
Here are some uses of the indium element.
- Indium has a lower melting point, which is why it is also used in manufacturing of fusible plugs.
- Indium is also used in thermistors, rectifiers, etc.
- Indium tin oxide is commonly used in LCD’s.
- Indium is also used with other metals to form an alloy with improved properties.
- The high speed bearings also use a coating of indium metal.
- Indium is also added to gold metal to provide hardness.