Periodic Table - Ptable
Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Scandium - Wikipedia
Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, [9] together with yttrium and the lanthanides. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia. [10]
Scandium - Element information, properties and uses | Periodic Table
Element Scandium (Sc), Group 3, Atomic Number 21, d-block, Mass 44.956. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
An Overview of Scandium (Sc or Element 21) - ThoughtCo
2019年7月3日 · Learn about the element scandium, otherwise known as Sc or element 21 on the periodic table of elements. Discover chemical, physical properties plus more.
Periodic Table of Elements - PubChem
Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
Scandium - Periodic Table
Scandium - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements.
WebElements Periodic Table » Scandium » the essentials
Atomic number: 21 ; Relative atomic mass (A r): 44.955908 (5) Standard state: solid at 298 K; Appearance: silvery white; Classification: Metallic
Scandium (Sc) - Periodic Table
Scandium is the 21st element in the periodic table and has a symbol of Sc and atomic number of 21. It has an atomic weight of 44.95591 and a mass number of 45. Scandium has twenty-one protons and twenty-four neutrons in its nucleus, and twenty-one electrons in four shells.
Periodic table - Wikipedia
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.
Scandium (Sc) - Periodic Table
Scandium is a chemical element of the periodic table with chemical symbol Sc and atomic number 21 with an atomic weight of 44.9559 u and is classed as transition metal and is part of group 3 (scandium group). Scandium is solid at room temperature.