Atomic NumberAtomic Number of Rhodium
Atomic Number of Rhodium is 45.
Chemical symbol for Rhodium is Rh. Number of protons in Rhodium is 45. Atomic weight of Rhodium is 102.9055 u or g/mol. Melting point of Rhodium is 1966 °C and its the boiling point is 3727 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Rhodium
This is a shiny hard metal of gold-reddish color, with the name coming from the Greek word rhodon, meaning rose. It has very high corrosion resistance and is one of platinum group metals known for their strength. For living organisms, rhodium is not important and, on the contrary, it has carcinogen properties. It occurs on our planet in combination with other metals like nickel or copper, and it can be found in the sands of South Africa. It is used in industry for producing optical fiber, optical mirrors and lenses. Rhodium can be used as a catalyst for various chemical processes. It also has low resistance to electricity and is used as electrical contact material.
Properties of Rhodium Element
| Atomic Number (Z) | 45 |
|---|---|
| Atomic Symbol | Rh |
| Group | 9 |
| Period | 5 |
| Atomic Weight | 102.9055 u |
| Density | 12.41 g/cm3 |
| Melting Point (K) | 2237 K |
| Melting Point (℃) | 1966 °C |
| Boiling Point (K) | 3968 K |
| Boiling Point (℃) | 3727 °C |
| Heat Capacity | 0.243 J/g · K |
| Abundance | 0.001 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Transition metal |
| Electronegativity (Pauling) χ | 2.28 |
| Ionization Energy (eV) | 7.4589 |
| Atomic Radius | 135pm |
| Covalent Radius | 135pm |
| Valence Electrons | 1 |
| Year of Discovery | 1803 |
| Discoverer | Wollaston |