Neutron

Science / Geology / Neutron: A subatomic particle, contained in the nucleus of an atom. It has no electrical charge and a mass similar to that of a proton.

Neutron Activation Analysis

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

Neutron-Activation Analysis

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

Lutetium (Lu)

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: unkn MORE

Europium (Eu)

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: unkn 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

Neptunium (Np)

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: unkn MORE

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