Template:Infobox yttrium

Yttrium, ₃₉Y

Yttrium
Pronunciation	/ˈɪtriəm/ ​(IT-ree-əm)
Appearance	sillery white
Standard atomic weight Ar, std(Y)	7001889058400000000♠88.90584(1)
Yttrium in the periodic cairt
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium Sc ↑ Y ↓ Lu strontium ← yttrium → zirconium
Atomic nummer (Z)	39
Group	group 3
Period	period 5
Block	d-block
Element category	Transeetion metal
Electron confeeguration	[Kr] 4d1 5s2
Electrons per shell	2, 8, 18, 9, 2
Pheesical properties
Phase at STP	solit
Meltin pynt	1799 K ​(1526 °C, ​2779 °F)
Bylin pynt	3609 K ​(3336 °C, ​6037 °F)
Density (near r.t.)	4.472 g/cm3
when liquid (at m.p.)	4.24 g/cm3
Heat o fusion	11.42 kJ/mol
Heat o vapourisation	365 kJ/mol
Molar heat capacity	26.53 J/(mol·K)
Vapour pressur P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1883 2075 (2320) (2627) (3036) (3607)
Atomic properties
Oxidation states	0, +1, +2, +3 waikly basic
Electronegativity	Pauling scale: 1.22
Atomic radius	empirical: 180 pm
Covalent radius	190±7 pm
Colour lines in a spectral range Spectral lines o yttrium
Ither properties
Naitural occurrence	primordial
Creestal structur	​hexagonal close-packed (hcp)
Speed o soond thin rod	3300 m/s (at 20 °C)
Thermal expansion	(r.t.) (α, poly) 10.6 µm/(m·K)
Thermal conductivity	17.2 W/(m·K)
Electrical resistivity	(r.t.) (α, poly) 596 n Ω·m
Magnetic orderin	paramagnetic
Young's modulus	63.5 GPa
Shear modulus	25.6 GPa
Bulk modulus	41.2 GPa
Poisson ratio	0.243
Brinell haurdness	589 MPa
CAS Nummer	7440-65-5
History
Diskivery	Johan Gadolin (1794)
First isolation	Carl Gustav Mosander (1840)
Main isotopes o yttrium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 87Y syn 3.35 d ε 87Sr γ - 88Y syn 106.6 d ε 88Sr γ - 89Y 100% stable 90Y syn 2.67 d β− 90Zr γ - 91Y syn 58.5 d β− 91Zr γ -

style="text-align:left"| data m.p. cat
	in	calc from C	diff	report	ref
C	1526	—	—
K	1799	1799	0
F	2779	2779	0
WD	2732 !2732 Fahrenheit
input	C: 1526, K: 1799, F: 2779
comment

style="text-align:left"| data b.p. cat
	in	calc from C	diff	report	ref
C	3336	—	—
K	3609	3609	0
F	6037	6037	0
WD	5301 !5301 Fahrenheit
input	C: 3336, K: 3609, F: 6037
comment

References

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