Any of the metallic elements within Groups 3 to 12 in the Periodic Table that have an incomplete inner electron shell and that serve as transitional links between the most and the least electropositive in a series of elements.
They are characterized by multiple valences, colored compounds, and the ability to form stable complex ions. Also called transition metal. An element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell.
| Name | Symbol | Atomic Number | Atomic Weigth |
|---|---|---|---|
| Scandium | Sc | 21 | 44.95591 |
| Titanium | Ti | 22 | 47.88 |
| Vanadium | V | 23 | 50.9415 |
| Chromium | Cr | 24 | 51.9961 |
| Manganese | Mn | 25 | 54.93805 |
| Iron | Fe | 26 | 55.847 |
| Cobalt | Co | 27 | 58.9332 |
| Nickel | Ni | 28 | 58.6934 |
| Copper | Cu | 29 | 63.546 |
| Yttrium | Y | 39 | 88.90585 |
| Zirconium | Zr | 40 | 91.224 |
| Niobium | Nb | 41 | 92.90638 |
| Molybdenum | Mo | 42 | 95.94 |
| Technetium | Tc | 43 | -97.9072 |
| Ruthenium | Ru | 44 | 101.07 |
| Rhodium | Rh | 45 | 102.9055 |
| Palladium | Pd | 46 | 106.42 |
| Silver | Ag | 47 | 107.8682 |
| Lanthanum | La | 57 | 138.9055 |
| Hafnium | Hf | 72 | 178.49 |
| Tantalum | Ta | 73 | 180.9479 |
| Tungsten | W | 74 | 183.84 |
| Rhenium | Re | 75 | 186.207 |
| Osmium | Os | 76 | 190.23 |
| Iridium | Ir | 77 | 192.22 |
| Platinum | Pt | 78 | 195.08 |
| Gold | Au | 79 | 196.96654 |
| Actinium | Ac | 89 | -227.0278 |
| Rutherfordium | Rf | 104 | -261.1089 |
| Hahnium | Ha | 105 | -262.1144 |
| Seaborgium | Sg | 106 | -263.1186 |
| Nielsbohrium | Ns | 107 | -262.1231 |
| Hessium | Hs | 108 | -265.1306 |
| Mietnerium | Mt | 109 | -266.1378 |
| Unnunnilium | Unn | 110 | -268 |
| Unnununium | Unu | 111 | -269 |
Moscovium is a synthetic element with the atomic number 115. It was first created in 2003 by scientists in Russia and the United States, and it is named after the Moscow region, where part of the discovery took place. Because it doesn’t exist naturally and breaks down very quickly—within milliseconds—Moscovium can only be studied in … Read more
Copernicium, element 112, is a synthetic superheavy element named in honour of Nicolaus Copernicus, whose model of the solar system redefined our place in the universe. In a way, Copernicium does something similar for chemistry, it exists in a region of the periodic table where the known laws of atomic behaviour begin to stretch. Positioned … Read more
Roentgenium is a synthetic chemical element with the atomic number 111 in the periodic table. It’s a synthetically produced transuranium element that cannot be found in Earth’s crust. As a member of the transition metals family of periodic table elements, this noble metal has three valence electrons and is currently used only in scientific research. … Read more
Meitnerium is a radioactive chemical element with the atomic number 109 in the periodic table. Since it’s synthetically produced, meitnerium cannot be found in Earth’s crust. Being a member of the transition metals family of the periodic table, the element 109 is assumed to be the heaviest metal of group 9, after iridium, rhodium, and … Read more
Gold is a chemical element with an atomic number of 79 in the periodic table of elements. It’s a precious metal found in its free elemental form in the beds of streams, alluvial deposits, and rock veins. Being a member of the transition metals family of periodic table elements, gold has one valence electron that … Read more
Platinum is a chemical element with the atomic number 78 in the periodic table. It’s an extremely rare metal with an abundance in Earth’s crust of about a millionth of 1 percent. Known since ancient times, this transition metal has strong anti-corrosive properties and makes for an excellent conductor of electricity. Being a member of … Read more
Silver is a chemical element with the atomic number 47 in the periodic table. It constitutes 0.05 part per million of Earth’s crust and ranks as the 68th most abundant chemical element. The properties of this noble metal have been known even to the ancient civilizations. As a member of the transition metals family of … Read more
Nickel is a chemical element with the atomic number 28 in the periodic table. It’s found in Earth’s crust with an abundance of 84 parts per million by weight. Being a member of the transition metals family of the periodic table, this divalent silvery-white metallic element has strong corrosion resistance and moderately strong ferromagnetic properties. … Read more
Copper is a chemical element with an atomic number of 29 in the periodic table of elements. The occurrence of this metal in Earth’s crust is about 0.25%, concentrated in copper ores. Apart from gold, copper is the only metal that does not naturally occur in gray or silver color. It also has two valence … Read more
Palladium is a chemical element with the atomic number 46 in the periodic table. It’s the most abundant platinum metal and occurs in Earth’s crust at an abundance of 0.015 parts per million. Being a member of the platinum group metals (PGM) of the periodic table, palladium has three valence electrons and adopts the oxidation … Read more