Talyo

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Thallium
81Tl
In

Tl

Uut
mercurythalliumlead
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 136, p
Standard atomic weight 204.38(1)
Electron configuration [Xe] 4f14 5d10 6s2 6p1
2, 8, 18, 32, 18, 3
Electron shells of thallium (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
Thallium has a hexagonal crystal structure
Magnetic ordering diamagnetic[1]
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
t  h  u
· r

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.

Ang mga gi basihan niini[usba | edit source]

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.


Galeriya sa hulagway[usba | edit source]