Mendelevium

Mendelevium (pronounced /ˌmɛndəˈlɛviəm/ or /ˌmɛndəˈliːviəm/) is a synthetic element with the symbol Md (formerly Mv) and the atomic number 101. A metallic radioactive transuranic element of the actinides, mendelevium is synthesized by bombarding einsteinium with alpha particles and was named after Dmitri Mendeleev, who was responsible for the Periodic Table. Researchers have shown that mendelevium has a moderately stable dipositive (II) oxidation... more

Chemical Element

The 101st Element in the Periodic Table

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Fermium

Fermium (pronounced /ˈfɜrmiəm/, FER-mee-em) is a synthetic element with the symbol Fm and atomic number 100. A highly radioactive metallic...

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Nobelium

Nobelium (pronounced /noʊˈbɛliəm/ noh-BEL-ee-əm or /noʊˈbiːliəm/ noh-BEE-lee-əm) is a synthetic element with the symbol No and atomic number 102. It...

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Symbol:

  • Md

Atomic mass:

  • 258 u (4.28E-16 µg )

Electronegativity (Pauling scale):

  • 1.3

Van der Waals radius:

  • 200 pm (0.00000787 )

Melting Point:

  • 826.85 °C (1520.3 °F )

Periodic table block:

Ionization Energy:

  • 6.58 eV (0.00000658 MeV )

Discovery Date:

  • 1955

Electron Configuration:

  • Rn 5f13 7s2
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