Science / Chemistry / Neutron Activation Analysis: An extremely sensitive technique for analyzing trace amounts of elements in a sample. The sample is bombarded with neutrons in a nuclear reactor, making it radioactive. Different elements produce diff MORE
Science / Geology / Neutron-Activation Analysis: A method of identifying isotopes of an element by bombarding them with neutrons and observing the characteristic radioactive decay products emitted. 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 / 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: un MORE
Science / Periodic Table of Elements / Neptunium (Np): Atomic number: 93, Atomic mass: (237) g.mol -1, Electronegativity: 1.3, Density: 20.25 g.cm-3 at 20?°C, Melting point: 640 ?°C, Boiling point: 3902 ?°C, Vanderwaals radius: unknown, Ionic radius: u MORE