Terbyo

Terbium
	65Tb
	gadolinium ← terbium → dysprosium
Panagway
	silvery white;
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	terbium, Tb, 65
Paglitok	/ˈtɜːrbiəm/ [[Help:Pronunciation respelling key\|Plantilya:Smallcaps all-bee-əm]]
Kategoriyang elemento	puthaw nga lantanido
Group, period, block	[[group {{{group}}} element\|{{{group}}}]], 6, f
Gibug-aton sa atomo	158.92535
Kontorno sa elektron	[Xe] 4f9 6s2; 2, 8, 18, 27, 8, 2 Electron shells of terbium (2, 8, 18, 27, 8, 2)
History
Pagkadiskobre	Carl Gustaf Mosander (1842)
First isolation	Carl Gustaf Mosander (1842)
Physical properties
Phase	magahi
Density (near r.t.)	8.23 g·cm−3
Liquid density at m.p.	7.65 g·cm−3
Melting point	1629 K, 1356 °C, 2473 °F
Boiling point	3503 K, 3230 °C, 5846 °F
Heat of fusion	10.15 kJ·mol−1
Heat of vaporization	293 kJ·mol−1
Molar heat capacity	28.91 J·mol−1·K−1
Vapor pressure
Atomic properties
Oxidation states	4, 3, 2, 1; (weakly basic oxide)
Electronegativity	? 1.2 (Pauling scale)
Ionization energies	1st: 565.8 kJ·mol−1
	2nd: 1110 kJ·mol−1
	3rd: 2114 kJ·mol−1
Atomic radius	177 pm
Covalent radius	194±5 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic at 300 K
Electrical resistivity	(r.t.) (α, poly) 1.150 µΩ·m
Thermal conductivity	11.1 W·m−1·K−1
Thermal expansion	(r.t.) (α, poly) 10.3 µm/(m·K)
Speed of sound (thin rod)	(20 °C) 2620 m·s−1
Young's modulus	(α form) 55.7 GPa
Shear modulus	(α form) 22.1 GPa
Bulk modulus	(α form) 38.7 GPa
Poisson ratio	(α form) 0.261
Vickers hardness	863 MPa
Brinell hardness	677 MPa
CAS registry number	7440-27-9
Most stable isotopes
	Main article: Isotopes of terbium
	v; t; e; · r

Ang terbyo (Iningles terbium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Tb ug kaiphan nga atomik 65. Ang terbyo mao ang puthaw nga lantanido.

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