Rhodium element (Ru) is in group 9 and period 5 of a periodic table. Rhodium 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 rhodium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Rhodium element (Information Table)
- Rhodium element in Periodic table
- Facts about Rhodium
- Properties of Rhodium
- Uses of Rhodium
Rhodium Element (Information Table)
The important data related to rhodium element is given in the table below.
|Appearance of rhodium||Silvery white metallic appearance|
|Atomic number of rhodium||45|
|Symbol of rhodium||Rh|
|Atomic mass of rhodium||102.91 u|
|Protons, Neutrons & Electrons in rhodium||Protons: 45, Neutrons: 58, Electrons: 45|
|State of rhodium (at STP)||Solid|
|Group number of rhodium in periodic table||9|
|Period number of rhodium in periodic table||5|
|Block of rhodium in periodic table||d-block|
|Category of rhodium||Transition metals|
|Bohr model or Electrons per shell or Electrons arrangement in rhodium||2, 8, 18, 16, 1|
|Electron configuration of rhodium||[Kr] 4d8 5s1|
|Orbital diagram of rhodium|
|Electronegativity of rhodium (on pauling scale)||2.28|
|Atomic radius of rhodium (van der Waals radius)||195 picometers|
|Density of rhodium||12.45 g/cm3|
|1st ionization energy of rhodium||7.459 eV|
|Main isotope of rhodium||103Rh|
|Melting point of rhodium||2237 K or 1964 °C or 3567 °F|
|Boiling point of rhodium||3968 K or 3695 °C or 6683 °F|
|Crystal structure of rhodium||Face Centered Cubic (FCC)|
|Discovery of rhodium||By William Hyde Wollaston in 1804|
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).
Rhodium element in Periodic table
The Rhodium element (Rh) has the atomic number 45 and is located in group 9 and period 5. Rhodium is a metal and it is classified as a transition element.
Click on above elements in the periodic table to see their information.
Facts about rhodium
Here are a few interesting facts about rhodium element.
- The name rhodium came from the Greek word “Rhodon” which means rose.
- Rhodium was discovered by William Hyde Wollaston in 1804.
- The concentration of rhodium in the earth’s crust is very less and it is 1 part per 200 million.
- Rhodium is obtained from the waste product of uranium fission.
- Around 87% of the total rhodium is used in catalytic converters.
Properties of rhodium
Here is a list of some physical properties and chemical properties of rhodium.
Physical properties of rhodium
- Rhodium is a solid metal that has a silvery white appearance.
- Rhodium is resistive to wear and it has a good hardness.
- The atomic mass of rhodium is 102.91 u and its density is 12.45 g/cm3.
- The melting point and boiling point of rhodium is 2237 K and 3968 K respectively.
- Rhodium has many isotopes, but the most abundant isotope is 103Ru.
- Rhodium has a FCC crystal structure.
Chemical properties of rhodium
- The electronic configuration of rhodium is [Kr] 4d8 5s1 and it is a transition metal as it has incomplete d-orbitals.
- Rhodium is very less reactive to acids.
- Rhodium is also called a noble metal as it does not react easily with oxygen.
- Rhodium is resistive to corrosion.
Uses of rhodium
Here are some uses of the rhodium element.
- Rhodium is used in catalytic converters (these are used in cleaning the vehicle emissions).
- Rhodium is also added to platinum and iridium. This makes the alloy heat resistant at higher temperatures.
- Rhodium is used as a coating metal on crucibles as well as coating on optical fibers.
- Rhodium is used as a catalyst in preparation of nitric acid and acetic acid.
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- Zhang, et al. (2011, January 11). Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks. Journal of Chemical & Engineering Data, 56(2), 328–337. https://doi.org/10.1021/je1011086
- It’s Elemental – The Element Rhodium. (n.d.). It’s Elemental – the Element Rhodium. https://education.jlab.org/itselemental/ele045.html
- Rhodium (Rh) | AMERICAN ELEMENTS ® (n.d.). American Elements: The Materials Science Company. https://www.americanelements.com/rh.html
- Atomic Data for Rhodium (Rh). (n.d.). Atomic Data for Rhodium (Rh). https://physics.nist.gov/PhysRefData/Handbook/Tables/rhodiumtable1.htm
- C&EN: IT’S ELEMENTAL: THE PERIODIC TABLE – RHODIUM. (n.d.). C&EN: IT’S ELEMENTAL: THE PERIODIC TABLE – RHODIUM. https://pubsapp.acs.org/cen/80th/rhodium.html?
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