Talyo

Ang talyo (Iningles thallium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Tl ug kaiphan nga atomik 81. Ang talyo mao ang puthaw.

Thallium
81Tl
In ↑ Tl ↓ Uut Periodic table mercury ← thallium → lead
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	thallium, Tl, 81
Paglitok	/ˈθæliəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ee-əm]]
Kategoriyang elemento	post-transition metal
Group, period, block	13, 6, p
Gibug-aton sa atomo	204.38(1)
Kontorno sa elektron	[Xe] 4f14 5d10 6s2 6p1 2, 8, 18, 32, 18, 3 Electron shells of thallium (2, 8, 18, 32, 18, 3)
History
Pagkadiskobre	William Crookes (1861)
First isolation	Claude-Auguste Lamy (1862)
Physical properties
Phase	magahi
Density (near r.t.)	11.85 g·cm−3
Liquid density at m.p.	11.22 g·cm−3
Melting point	577 K, 304 °C, 579 °F
Boiling point	1746 K, 1473 °C, 2683 °F
Heat of fusion	4.14 kJ·mol−1
Heat of vaporization	165 kJ·mol−1
Molar heat capacity	26.32 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 882 977 1097 1252 1461 1758
Atomic properties
Oxidation states	3, 2, 1 (mildly basic oxide)
Electronegativity	1.62 (Pauling scale)
Ionization energies	1st: 589.4 kJ·mol−1
	2nd: 1971 kJ·mol−1
	3rd: 2878 kJ·mol−1
Atomic radius	170 pm
Covalent radius	145±7 pm
Van der Waals radius	196 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 0.18 µΩ·m
Thermal conductivity	46.1 W·m−1·K−1
Thermal expansion	(25 °C) 29.9 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 818 m·s−1
Young's modulus	8 GPa
Shear modulus	2.8 GPa
Bulk modulus	43 GPa
Poisson ratio	0.45
Mohs hardness	1.2
Brinell hardness	26.4 MPa
CAS registry number	7440-28-0
Most stable isotopes
Main article: Isotopes of thallium
iso NA half-life DM DE (MeV) DP 203Tl 29.524% 203Tl is stable with 122 neutrons 204Tl syn 3.78 y β− 0.764 204Pb ε 0.347 204Hg 205Tl 70.476% 205Tl is stable with 124 neutrons

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