- ๐ฌ๐ง Yttrium
- ๐บ๐ฆ Iัััะน
- ๐จ๐ณ ้
- ๐ณ๐ฑ Yttrium
- ๐ซ๐ท Yttrium
- ๐ฉ๐ช Yttrium
- ๐ฎ๐ฑ ืืืืจืืื
- ๐ฎ๐น Ittrio
- ๐ฏ๐ต ใคใใใชใฆใ
- ๐ต๐น Ítrio
- ๐ช๐ธ Ytrio
- ๐ธ๐ช Yttrium
- ๐ท๐บ ะัััะธะน
- Name: yttrium
- Symbol: Y
- Atomic number: 39
- Relative atomic mass (Ar): 88.90584 (2)
- Standard state: solid at 298 K
- Appearance: silvery white
- Classification: Metallic
- Group in periodic table: 3
- Group name: (none)
- Period in periodic table: 5
- Block in periodic table: d
- Shell structure: 2.8.18.9.2
- CAS Registry: 7440-65-5
Yttrium atoms have 39 electrons and the shell structure is 2.8.18.9.2. The ground state electronic configuration of neutral yttrium is [Kr].4d1.5s2 and the term symbol of yttrium is 2D3/2.
Yttrium: description
Yttrium has a silvery-metallic lustre. Yttrium turnings ignite in air. Yttrium is found in most rare-earth minerals. Moon rocks contain yttrium and yttrium is used as a "phosphor" to produce the red colour in television screens.
yttrium
This sample is from The Elements Collection, an attractive and safely packaged collection of the 92 naturally occurring elements that is available for sale.
Yttrium: physical properties
- Density of the chemical elements on a miniature periodic table spark table Density of solid: 4472 kg m-3
- Molar volume of the chemical elements on a miniature periodic table spark table Molar volume: 19.88 cm3
- Thermal conductivity of the chemical elements on a miniature periodic table spark table Thermal conductivity: 17.2 W m‑1 K‑1
Yttrium: heat properties
- Melting point on a miniature periodic table spark table Melting point: 1799 [1526 °C (2779 °F)] K
- Boiling point on a miniature periodic table spark table Boiling point: 3609 [3336 °C (6037 °F)] K
- Enthalpy of fusion on a miniature periodic table spark table Enthalpy of fusion: 20.5 kJ mol-1
Yttrium: atom sizes
- Atomic radius (empirical) of the chemical elements on a miniature periodic table spark table Atomic radius (empirical): 180 pm
- Covalent (single bond) radius on a periodic table spark table Molecular single bond covalent radius: 163 (coordination number 3) ppm
- van der Waals radius on a periodic table spark table van der Waals radius: 275 ppm
Yttrium: electronegativities
- Pauling electronegativity of the chemical elements on a miniature periodic table spark table Pauling electronegativity: 1.22 (Pauling units)
- Allred-Rochow electronegativity of the chemical elements on a miniature periodic table spark tableAllred Rochow electronegativity: 1.11 (Pauling units)
- Mulliken-Jaffe electronegativity of the chemical elements on a miniature periodic table spark tableMulliken-Jaffe electronegativity: (no data)
Yttrium: orbital properties
- First ionization energy the chemical elements on a miniature periodic table spark table First ionisation energy: 599.87 kJ mol‑1
- Second ionization energy the chemical elements on a miniature periodic table spark table Second ionisation energy: 1179.40 kJ mol‑1
- Third ionization energy the chemical elements on a miniature periodic table spark table Third ionisation energy: 1980.30 kJ mol‑1
Yttrium: abundances
- Chemical elements abundance by weight in the universe on a miniature periodic table spark tableUniverse: 7 ppb by weight
- Chemical elements abundance by weight in the earth's crust on a miniature periodic table spark tableCrustal rocks: 29000 ppb by weight
- Chemical elements abundance by weight in humans on a miniature periodic table spark tableHuman: (no data) ppb by weight
Yttrium: crystal structure
Yttrium: biological data
- Human abundance by weight of the chemical elements on a miniature periodic table spark table Human abundance by weight: (no data) ppb by weight
Yttrium has no biological role.
Yttrium: uses
Yttrium: reactions
Reactions of yttrium as the element with air, water, halogens, acids, and bases where known.
Yttrium: binary compounds
Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of yttrium where known.
Yttrium: compound properties
Bond strengths; lattice energies of yttrium halides, hydrides, oxides (where known); and reduction potentials where known.
Yttrium: history
Yttrium was discovered by Johann Gadolin in 1794 at Finland. Origin of name: named after the village of "Ytterby" near Vaxholm in Sweden.Yttrium: isotopes
Yttrium: isolation
Isolation: yttrium metal is available commercially so it is not normally necesary to make it in the laboratory. Yttrium is found in lathanoid minerals and the extraction of the yttrium and the lanthanoid metals from the ores is highly complex. Initially, the metals are extractedas salts from the ores by extraction with sulphuric acid (H2SO4), hydrochloric acid (HCl), and sodium hydroxide (NaOH). Modern purification techniques for these lanthanoid salt mixtures involve selective complexation techniques, solvent extractions, and ion exchange chromatography.
Pure yttrium is available through the reduction of YF3 with calcium metal.
2YF3 + 3Ca → 2Y + 3CaF2