Half-Life

Science / Geology / Half-Life: The time required for half of a homogeneous sample of radioactive material to decay.

Nobelium (No)

Science / Periodic Table of Elements / Nobelium (No): Atomic number: 102, Atomic mass: 259 g.mol -1, Electronegativity: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unknown, Isotope MORE

Actinium (Ac)

Science / Periodic Table of Elements / Actinium (Ac): Atomic number: 89, Atomic mass: 227 g.mol -1, Electronegativity: 1.1, Density: 10.07 g.cm-3 at 20°C, Melting point: 1050 °C, Boiling point: 3250 °C, Vanderwaals radius: unknown, Ionic radius: unkno MORE

Ununbium (Uub)

Science / Periodic Table of Elements / Ununbium (Uub): Atomic number: 112, Atomic mass: 276.8 g.mol -1, Electronegativity: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unknown, Isoto MORE

Dubnium (Db)

Science / Periodic Table of Elements / Dubnium (Db): Atomic number: 105, Atomic mass: 261.9 g.mol -1, Electronegativity: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unknown, Isoto MORE

Fermium (Fm)

Science / Periodic Table of Elements / Fermium (Fm): Atomic number: 100, Atomic mass: (257) g.mol -1, Electronegativity: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unknown, Isoto MORE

Argon (Ar)

Science / Periodic Table of Elements / Argon (Ar): Atomic number: 18, Atomic mass: 39.948 g.mol -1, Electronegativity: unknown, Density: 1.78.10 -3 g.cm -3 at 0 °C, Melting point: -189 °C, Boiling point: -185.7 °C, Vanderwaals radius: 0.192 nm, Ion MORE

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