Neptunium Overview Neptunium Melting Point 640°C Discovery Discovered By: E.M. McMillan, P.H. Description Rare, silvery radioactive metal. In the case of Neptunium the boiling point is 3902°C.Now let's review some facts about Neptunium that people find interesting. Abelson Year: 1940 Location: United States State at 20 °C solid Uses It has no significant commercial applications.

Neptunium forms numerous chemical compounds. unknown. Sources Produced by bombarding uranium with slow neutrons. Recently a neptunium-based superconductor alloy was discovered with formula NpPd 5 Al 2. Neptunium - Boiling Point. Ionic radius. D. Y. Choporov, E. T. Chudinov: Melting point and saturated vapor pressure of neptunium tetrachloride, in: Sov. Boiling Point – Saturation Melting point of Neptunium is 644°C. Neptunium - Melting Point.

Melting point of Neptunium is 644°C. Neptunium (Np) is a radioactive member of the actinide group (row 5f) of the periodic table of the elements.

Neptunium is a ductile, silvery, radioactive metal. Boiling point of Neptunium is 4000°C. Isotopes. unknown. McMillan in 1940. Boiling point of Neptunium is 4000°C.

Neptunium (Np) is a silvery colored radioactive metal that has the atomic number 93 in the periodic table. Boiling point of Neptunium is 4000°C . 640 °C.

Neptunium. osti.gov journal article: melting point and decomposition pressure of neptunium mononitride Title: MELTING POINT AND DECOMPOSITION PRESSURE OF NEPTUNIUM MONONITRIDE Full Record Chemically it is extremely reactive and is attacked by oxygen, steam and acids, but not by alkalis.

It is the most dense of all the actinides and the fifth most dense of all naturally occurring elements.

Radiochem., ... Part I. Heats of formation of crystalline neptunium tetrachloride, neptunium oxide dichloride, and neptunium trioxide monohydrate, and a new determination of the heat of formation of the Np III and Np IV ions in 1M -hydrochloric acid, in: J. Chem. Discovered by.

Vanderwaals radius . It is an Actinoid Metal with the symbol Np. The boiling point of a substance is the temperature at which this phase change (boiling or vaporization) occurs. Neptunium is found between uranium (92), the last of the natural elements, & plutonium (94) on the Periodic Table.

Boiling point.

Neptunium – Melting Point and Boiling Point. Atomic Mass … Experimental Melting Point: 640 °C Kaye & Laby (No longer updated) Experimental Boiling Point: 3900 °C / 760 mmHg Kaye & Laby (No longer updated) Experimental Density: 20.45 g/mL / 20 °C Kaye & Laby (No longer updated) Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module. Name: Neptunium Symbol: Np Atomic Number: 93 Atomic Mass: (237.0) amu Melting Point: 640.0 °C (913.15 K, 1184.0 °F) Boiling Point: 3902.0 °C (4175.15 K, 7055.6 °F) Number of Protons/Electrons: 93 Number of Neutrons: 144 Classification: Rare Earth Crystal Structure: Orthorhombic Density @ 293 K: 20.45 g/cm 3 Color: Unknown Atomic Structure

Atomic Symbol Np Name Origin Named for the planet Neptune. Melting point. The melting point of a substance is the temperature at which this phase change occurs. Note that, these points are associated with the standard atmospheric pressure . Ok but what is the boiling point of an atom of Np? 8.

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