Sodium

Sodium (pronounced /ˈsoʊdiəm/, SOH-di-əm) is a metallic element with a symbol Na (from Latin natrium or Arabic natrun) and atomic number 11. It is a soft, silvery-white, highly reactive metal and is a member of the alkali metals within "group 1" (formerly known as ‘group IA’). It has only one stable isotope, Na. Elemental sodium was first isolated by Sir Humphry Davy in 1806 by passing an electric current through molten sodium hydroxide. Elementa... more

Also known as:

  • Sodium, Na

Chemical Element

The 11th Element in the Periodic Table

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Neon

Neon (pronounced /ˈniːɒn/) is the chemical element that has the symbol Ne and atomic number 10. Although a very common element in the universe, it is...

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Magnesium

Magnesium (pronounced /mæɡˈniːziəm/, mag-NEE-zee-əm) is a chemical element with the symbol Mg, atomic number 12 and common oxidation number +2. It is...

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Symbol:

  • Na

Atomic mass:

Mass Uncertainty
  • 22.98977 u (3.817540348E-17 µg )
  • 0 u (3.3211E-26 µg )

Electron affinity:

Value Uncertainty
  • 0.54793 eV (5.47926E-7 MeV )
  • 0.00003 eV (2.5E-11 MeV )

Electronegativity (Pauling scale):

  • 0.93

Covalent radius:

  • 1.54 pm (6.06E-8 )

Van der Waals radius:

  • 240 pm (0.00000945 )

Melting Point:

  • 97.85 °C (208.1 °F )

Boiling Point:

  • 882.85 °C (1621.1 °F )

Chemical series:

Periodic table block:

Ionization Energy:

  • 5.1391 eV (0.0000051391 MeV )

Discovery Date:

  • 1807

Discovering Country:

Electron Configuration:

  • Ne 3s1

Discoverer:

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