Science / Chemistry / Yttrium: Element 39, atomic weight 88.90585, a dark gray metal that is used in alloys and nuclear technology for its high neutron transparency. Yttrium compounds are used in the manufacture of color tv screens, superconducting ceramics, and fireproof bricks.
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Science / Periodic Table of Elements / Yttrium (Y): Atomic number: 39, Atomic mass: 88.9059 g.mol -1, Electronegativity: 1.2, Density: 4.47 g.cm-3 at 20?°C, Melting point: 1500 ?°C, Boiling point: 3336 ?°C, Vanderwaals radius: 0.106 nm (+3), Isotope MORE
Science / Periodic Table of Elements / Lutetium (Lu): Atomic number: 71, Atomic mass: 174.97 g.mol -1, Electronegativity: 1.2, Density: 9.7 g.cm-3 at 20?°C, Melting point: 1663 ?°C, Boiling point: 3395 ?°C, Vanderwaals radius: unknown, Ionic radius: u MORE
Science / Periodic Table of Elements / Europium (Eu): Atomic number: 63, Atomic mass: 167.26 g.mol -1, Electronegativity: 1.2, Density: 9.2 g.cm-3 at 20?°C, Melting point: 1522 ?°C, Boiling point: 2510 ?°C, Vanderwaals radius: unknown, Ionic radius: u MORE
Science / Periodic Table of Elements / Ytterbium (Yb): Atomic number: 70, Atomic mass: 173.04 g.mol -1, Electronegativity: 1.1, Density: 7 g.cm-3 at 20?°C, Melting point: 824 ?°C, Boiling point: 1466 ?°C, Vanderwaals radius: unknown, Ionic radius: unkn MORE