Thallium

Symbol 符号

Tl

Atomic number 原子序数

81

Atomic mass 原子质量	204.37		Thermal conductivity 热导率	0.461
Atomic radius 原子半径	1.76		Covalent radius 共价半径	1.48
Density 密度	11.85		Atomic volume 原子体积	17.2
Melting point 熔点	577		Oxidation states 氧化态	3,1
Boiling point 沸点	1730		Stable isotopes 稳定同位素	2
Heat of vapor. 汽化热	164.1		Electronegativity 电负性	2.04
Heat of fusion 熔化热	4.142		First ionization 第一电离能	6.108
Specific heat 比热容	0.13		Electrical conduct. 电导率	...

Electron configuration 电子排布

Thallium

Thallium is a rare metal which has found little application. It forms a high-temperature superconductor compound which has much promise. A radioisotope of thallium is used in medical diagnostic tests to measure the perfusion of blood into the heart muscle.

In the sulfide mineral hutchinsonite,(Tl, Pb)₂As₅S₉ , thallium joins with arsenic and lead.

Thallium Nuclear Data