Mendelevium

Mendelevium ( /ˌmɛndəˈlɛviəm/ or /ˌmɛndəˈliːviəm/) is a synthetic element with the symbol Md (formerly Mv) and the atomic number 101. A metallic radioactive transuranic element in the actinide series, mendelevium is usually synthesized by bombarding einsteinium with alpha particles. It was named after Dmitri Ivanovich Mendeleev, who created the Periodic Table. Mendeleev's periodic system is the fundamental way to classify all the chemical element... More

Atomic number:

  • 101

Periodic table block:

Van der Waals radius:

  • 200 pm (0.00000787 )

Chemical Element

The 101st Element in the Periodic Table

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Fermium

Fermium ( /ˈfɜrmiəm/ FUR-mee-əm) is a synthetic element with the symbol Fm. It is the 100th element in the periodic table and a member of the...

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Nobelium

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

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Symbol:

  • Md

Atomic mass:

  • 258 u (4.28E-16 µg )

Electronegativity (Pauling scale):

  • 1.3

Melting Point:

  • 826.85 °C (1520.3 °F )

Ionization Energy:

  • 6.58 eV (0.00000658 MeV )

Discovery Date:

  • 1955

Electron Configuration:

  • Rn 5f13 7s2
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