Cadmium element (Cd) is in group 12 and period 5 of a periodic table. Cadmium is in the d-block and it is classified as a post-transition element on the periodic table.
There is a lot more information related to cadmium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Cadmium element (Information Table)
- Cadmium element in Periodic table
- Facts about Cadmium
- Properties of Cadmium
- Uses of Cadmium
Cadmium Element (Information Table)
The important data related to cadmium element is given in the table below.
|Appearance of cadmium||Metallic bluish-gray|
|Atomic number of cadmium||48|
|Symbol of cadmium||Cd|
|Atomic mass of cadmium||112.41 u|
|Protons, Neutrons & Electrons in cadmium||Protons: 48, Neutrons: 64, Electrons: 48|
|State of cadmium (at STP)||Solid|
|Group number of cadmium in periodic table||12|
|Period number of cadmium in periodic table||5|
|Block of cadmium in periodic table||d-block|
|Category of cadmium||Post-transition metal|
|Bohr model or Electrons per shell or Electrons arrangement in cadmium||2, 8, 18, 18, 2|
|Electron configuration of cadmium||[Kr] 4d10 5s2|
|Orbital diagram of cadmium|
|Electronegativity of cadmium (on pauling scale)||1.69|
|Atomic radius of cadmium (van der Waals radius)||158 picometers|
|Density of cadmium||8.65 g/cm3|
|1st ionization energy of cadmium||8.994 eV|
|Main isotope of cadmium||114Cd, 112Cd|
|Melting point of cadmium||594.2 K or 321 °C or 610 °F|
|Boiling point of cadmium||1040 K or 767 °C or 1413 °F|
|Crystal structure of cadmium||Hexagonal closed packing (HCP)|
|Discovery of cadmium||By Friedrich Stromeyer in 1817|
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).
Cadmium element in Periodic table
The Cadmium element (Cd) has the atomic number 48 and is located in group 12 and period 5. Cadmium is a metal and it is classified as a post-transition element.
Click on above elements in the periodic table to see their information.
Facts about cadmium
Here are a few interesting facts about cadmium element.
- Cadmium was discovered by Friedrich Stromeyer in 1817.
- Cadmium is a soft metal and it can also be cut with a knife.
- Cadmium ores are not from the earth’s crust but it is obtained during the refining of zinc.
- It is estimated that the earth’s crust contains a very small concentration (0.150 ppm) of cadmium.
- If 1 ton of zinc is refined, then we can get only 6.5 pounds of cadmium.
Properties of cadmium
Here is a list of some physical properties and chemical properties of cadmium.
Physical properties of cadmium
- Cadmium has a shiny bluish-gray appearance.
- Cadmium is a soft and malleable metal.
- Cadmium is a good conductor of heat and electricity.
- The melting point and boiling point of cadmium is 594.2 K and 1040 K.
Chemical properties of cadmium
- The cadmium has a most common oxidation state of +2.
- The electronic configuration of cadmium is [Kr] 4d10 5s2 and it is classified as a post-transition metal on the periodic table.
- Cadmium is resistive to corrosion so it is also used in plating other metals.
- The bulk cadmium metal is not flammable but its powdered form may burn and release toxic fumes.
- The cadmium metal pieces are insoluble in water.
- When cadmium is heated in air, it forms cadmium oxide (CdO).
Uses of cadmium
Here are some uses of the cadmium element.
- Cadmium is mostly used in rechargeable nickel-cadmium batteries.
- Cadmium is used in anti-corrosion plating on the steel.
- Cadmium rods are used as a neutron absorber in nuclear reactors.
- Cadmium is also used in some semiconductor materials.
- Different cadmium salts are used in paint pigments to get different colors (mostly red, yellow and orange).
- Chemistry of Cadmium. (2013, October 2). Chemistry LibreTexts. https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/3_d-Block_Elements/Group_12%3A_Transition_Metals/Chemistry_of_Cadmium
- Bedford, et al. (1996, April 1). Recommended values of temperature on the International Temperature Scale of 1990 for a selected set of secondary reference points. Metrologia, 33(2), 133–154. https://doi.org/10.1088/0026-1394/33/2/3
- Allred, A. (1961, June). Electronegativity values from thermochemical data. Journal of Inorganic and Nuclear Chemistry, 17(3–4), 215–221. https://doi.org/10.1016/0022-1902(61)80142-5
- Possolo, et al. (2018, January 4). Interpreting and propagating the uncertainty of the standard atomic weights (IUPAC Technical Report). Pure and Applied Chemistry, 90(2), 395–424. https://doi.org/10.1515/pac-2016-0402
- Emsley, J. (2011). Nature’s Building Blocks: An A-Z Guide to the Elements. United Kingdom: OUP Oxford.
- Haynes, W. M. (Ed.). (2014, June 4). CRC Handbook of Chemistry and Physics. https://doi.org/10.1201/b17118
- Cadmium – Element information, properties and uses | Periodic Table. (n.d.). Cadmium – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/48/cadmium
- Cadmium – Wikipedia. (2021, November 25). Cadmium – Wikipedia. https://en.wikipedia.org/wiki/Cadmium
- P. (n.d.). Cadmium | Cd (Element) – PubChem. Cadmium | Cd (Element) – PubChem. https://pubchem.ncbi.nlm.nih.gov/element/Cadmium
- It’s Elemental – The Element Cadmium. (n.d.). It’s Elemental – the Element Cadmium. https://education.jlab.org/itselemental/ele048.html
- Electronic structure of the elements. (2000, March). The European Physical Journal C, 15(1–4), 78–79. https://doi.org/10.1007/bf02683401
- James A. M. & Lord M. P. (1992). Macmillan’s chemical and physical data. Macmillan.
- Periodic Table of Elements: Los Alamos National Laboratory. (n.d.). Periodic Table of Elements: Los Alamos National Laboratory. https://periodic.lanl.gov/48.shtml
- Atomic Weight of Cadmium | Commission on Isotopic Abundances and Atomic Weights. (n.d.). Atomic Weight of Cadmium | Commission on Isotopic Abundances and Atomic Weights. https://ciaaw.org/cadmium.htm
- Atomic Data for Cadmium (Cd). (n.d.). Atomic Data for Cadmium (Cd). https://physics.nist.gov/PhysRefData/Handbook/Tables/cadmiumtable1.htm
- Cadmium Statistics and Information | U.S. Geological Survey. (n.d.). Cadmium Statistics and Information | U.S. Geological Survey. https://www.usgs.gov/centers/national-minerals-information-center/cadmium-statistics-and-information
Jay is an educator and has helped more than 100,000 students in their studies by providing simple and easy explanations on different science-related topics. With a desire to make learning accessible for everyone, he founded Knords Learning, an online chemistry learning platform that provides students with easily understandable explanations.
Read more about our Editorial process.