Talyo

Thallium
81Tl
In ↑ Tl ↓ Uut Periodic table mercury ← thallium → lead
Appearance
silvery white
General properties
Name, simbolo, kaiphan	thallium, Tl, 81
Pronunciation	Plantilya:IPAc-en Plantilya:Respell
Element category	post-transition metal
Group, period, block	13, 6, p
Standard atomic weight	204.38(1)
Electron configuration	[Xe] 4f14 5d10 6s2 6p1 2, 8, 18, 32, 18, 3
History
Discovery	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

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.

Galeriya sa hulagway

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