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:For the "lead" in news writing, see news style.


thallium - lead - bismuth
Sn
Pb
Uuq  
 
 
General
Name, Symbol, Number Lead, Pb, 82
Chemical series Poor metals
Group, Period, Block 14(IVA), 6A period 6 element is one of the chemical elements in the sixth row (or period of the periodic table of the elements, including the Lanthanides. These are: Chemical elements in the sixth period Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 #Name 55 C , pThe p-block of the periodic table of elements consists of the last six groups. In the elemental form of the p-block elements, the highest energy electron occupies a p- orbital. The p-block contains all of the nonmetals and semimetals, as well as some of t
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 11340 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 1.5
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of bluish white
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 207.2 amuThe atomic mass unit amu , unified atomic mass unit u , or dalton Da , is a small unit of mass used to express atomic masses and molecular masses. It is defined to be 1/12 of the mass of one atom of Carbon-12. Accordingly, :1 u 1/N gram 1/(1000 N) kg (whe
Atomic radius (calc.) 180 (154) pm
Covalent radius 147 pm
van der Waals radius 202 pm
Electron configuration [ Xe]4 f14 5 d10 6 s2 6p2
e- 's per energy level 2, 8, 18, 32, 18, 4
Oxidation states ( Oxide) 4, 2 ( amphoteric)
Crystal structure Cubic face centered
Physical properties
State of matter Solid ( diamagnetic)
Melting point 600.61 K (621.43 ° F)
Boiling point 2022 K (3180 °F)
Molar volume 18.26 ×10-6 m3/mol
Heat of vaporization 177.7 kJ/mol
Heat of fusion 4.799 kJ/mol
Vapor pressure 4.21 E-07 Pa at 600 K
Speed of sound 1260 m/s at 293.15 K
Miscellaneous
Electronegativity 2.33 ( Pauling scale)
Specific heat capacity 129 J/(kg*K)
Electrical conductivity 4.81 106/m ohm
Thermal conductivity 35.3 W/(m*K)
1st ionization potential 715.6 kJ/mol
2nd ionization potential 1450.5 kJ/mol
3rd ionization potential 3081.5 kJ/mol
4th ionization potential 4083 kJ/mol
5th ionization potential 6640 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
202Pb {syn.} 52500 y Alpha
Epsilon
2.598
0.050
198Hg
202Tl
204Pb 1.4 >1.4 E17 y Alpha 2.186 200Hg
205Pb {syn.} 1.53 E7 y Epsilon

0.051

205Tl
206Pb 24.1% Pb is stable with 124 neutrons
207Pb 22.1% Pb is stable with 125 neutrons
208Pb 52.4% Pb is stable with 126 neutrons
210Pb {syn.} 22.3 y Alpha
Beta

3.792
0.064

206Hg
210Bi
SI units & STP are used except where noted.

Lead is a chemical element in the periodic table that has the symbol Pb ( L. Plumbum) and atomic number 82. A soft, heavy, toxic and malleable poor metal, lead has a dull gray appearance and is bluish white when freshly cut but tarnishes to dull gray when exposed to air. Lead is used in building construction, lead-acid accumulators, bullets and shot, and is part of solder, pewter, and fusible alloys. Lead has the highest atomic number of all stable elements.*





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