Actinide

Science / Chemistry / Actinide: Elements 89-102 are called actinides. Electrons added during the Aufbau construction of actinide atoms go into the 5f subshell. Actinides are unstable and undergo radioactive decay. The most common actinides on Earth are uranium and thorium.

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

Berkelium (Bk)

Science / Periodic Table of Elements / Berkelium (Bk): Atomic number: 97, Atomic mass: (247) g.mol -1, Electronegativity: unknown, Density: 14 g.cm3 at 20°C, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unkno MORE

Einsteinium (Es)

Science / Periodic Table of Elements / Einsteinium (Es): Atomic number: 99, Atomic mass: 254 g.mol -1, Electronegativity: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unknown, Isotopes MORE

Californium (Cf)

Science / Periodic Table of Elements / Californium (Cf): Atomic number: 98, Atomic mass: (251) g.mol -1, Electronegativity accordin to Pauling: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic rad MORE

Protactinium (Pa)

Science / Periodic Table of Elements / Protactinium (Pa): Atomic number: 91, Atomic mass: 231.0359 g.mol -1, Electronegativity: 1.5, Density: 15.37 g.cm-3 at 20°C, Melting point: 1600 °C, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: u MORE

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