Lead

Lead (pronounced /ˈlɛd/, led) is a main-group element with symbol Pb (Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid. Lead is used in building construction, lead-acid batteries, bullets and shot, weights, ... more

Chemical Element

The 82nd Element in the Periodic Table

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Thallium

Thallium (pronounced /ˈθæliəm/, THAL-ee-əm) is a chemical element with the symbol Tl and atomic number 81. This soft gray malleable poor metal...

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Bismuth

Bismuth (pronounced /ˈbɪzməθ/, BIZ-məth) is a chemical element that has the symbol Bi and atomic number 83. This trivalent poor metal chemically...

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Symbol:

  • Pb

Atomic mass:

Mass Uncertainty
  • 207.2 u (3.441E-16 µg )
  • 0.1 u (1.7E-19 µg )

Electrons per shell:

  • 2,8,18,32,18,4

Electron affinity:

Value Uncertainty
  • 0.364 eV (3.64E-7 MeV )
  • 0.008 eV (8E-9 MeV )

Electronegativity (Pauling scale):

  • 2.33

Atomic radius:

  • 180 pm (0.00000709 )

Covalent radius:

  • 1.47 pm (5.79E-8 )

Van der Waals radius:

  • 230 pm (0.00000906 )

Melting Point:

  • 327.5 °C (621.5 °F )

Boiling Point:

  • 1,749.85 °C (3181.76 °F )

Periodic table block:

Ionization Energy:

  • 7.4167 eV (0.0000074167 MeV )

Discovery Date:

  • 7000 B.C.E.

Electron Configuration:

  • Xe 4f14 5d10 6s2 6p2
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