Scandium Atomic Number

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  1. Sc Name of Element: Scandium Atomic Weight: 45.0 Atomic Number: 21. Atomic Weight: 227.0 Atomic Number: 89 Group: Transition Metals Electron Configuration.
  2. Scandium iodide (ScI3) is used in lamps that produce light having a color closely matching natural sunlight. Atomic Number 21 Learn more about the atomic number. Description Fairly soft, silvery-white metal. Eighth most abundant 'rare earth' found in the earth's crust (5.0 ppm). Atomic Mass 44,95591 Learn more about the atomic mass.
  3. Scandium is the 31 st most abundant element on Earth, according to Periodic Table, with about 22 parts per million abundance by weight in Earth's crust, according to Chemicool.

Scandium is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic d-block element, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanoids. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia. ››More information on molar mass and molecular weight. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.

Molar mass of Sc = 44.955910 g/mol

Convert grams Scandium to moles or moles Scandium to grams


Scandium
Symbol# of AtomsScandiumSc44.9559101100.000%


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SC
Sc

WhoScandium Atomic Number

In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.

Scandium number of protons

The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. We use the most common isotopes. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.

Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.

Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights.

Atomic Number List

Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.

A common request on this site is to convert grams to moles. To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion. This site explains how to find molar mass.

Scandium Atomic Mass Number

Scandium

Chemical properties of scandium - Health effects of scandium - Environmental effects of scandium

21

Atomic mass

44.9559 g.mol -1

Electronegativity according to Pauling

unknown

Density

3.0 g.cm-3 at 20°C

Melting point

1541 °C

Boiling point

2836 °C

Vanderwaals radius

0.161 nm

Ionic radius

0.083 nm (+3)

Isotopes

7

Electronic shell

[ Ar ] 3d1 4s2

Energy of first ionisation

640.5 kJ.mol -1

Energy of second ionisation

1233 kJ.mol -1

Energy of third ionistion

2389 kJ.mol -1

Energy of fourth ionisation

7089 kJ.mol -1

Discovered by

Lars Nilson in 1879

Scandium

Scandium is a soft, silvery transition element which occurs in rare minerals from Scandinavia. It develops a slightly yellowish or pinkish cast when exposed to air. Scandium tarnished in air and burn easily, once it has been ignited. It reacts with water to form hydrogen gas and will dissolve in many acids. Pure scandium is produced by heating scandium fluoride (ScF3) with calcium metal.
Applications

Bios password generator online. Scandium is one of the rare chemicals, that can be found in houses in equipment such as colour televisions, fluorescent lamps, energy-saving lamps and glasses. The use of scandium is still growing, due to the fact that it is suited to produce catalysers and to polish glass.
The main application by volume is in aluminium-scandium alloys for the aerospace industry and for sports equipment (bikes, baseball bats, etc.) which rely on high performance materials. It has been shown to reduce solidification cracking during the welding of high strength aluminium alloys.

Scandium in the environment

Scandium can rarely be found in nature, as it occurs in very small amounts. Scandium is usually found only in two different kinds of ores. Thortveitite is the primary source of scandium with uranium mill tailings by-products also being an important source. World production amount to only 50 kg per year. There is no estimate of how much is potentially available.
Scandium is only the 50th most abundant element on hearth, it is distributed widely, occurring in trace quantities in over 800 minerals. The blue color of the aquamarine variety of beryl is thought to be caused by scandium.
Only about 3% of plants that were analysed for scandium shows its presence, and even those amounts were tiny, with vegetable having only 5 ppb although grass has 70 ppb.

Health effects of scandium

Scandium has no biological role. Only trace amounts reach the food chain, so the average person's daily intake is less than 0.1 microgram.

Scadium is not toxic, although there have been suggestions that some of its compounds might be cancerogenic.

Scandium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Scandium can be a threat to the liver when it accumulates in the human body.


Effects of scandium on the environment

Scandium is dumped in the environment in many different places, mainly by petrol-producing industries. It can also enter the environment when household equipment is thrown away. Scandium will gradually accumulate in soils and water soils and this will eventually lead to increasing concentrations in humans, animals and soil particles.
With water animals scandium causes damage to cell membranes, which has several negative influences on reproduction and on the functions of the nervous system.

Back to the periodic table of elements



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