Table of Contents
What is Neptunium? ; Neptunium: Summary In Tabular Form ;
Neptunium is a radioactive chemical element with the symbol Np and atomic number 93. It is a silvery-white metallic element that occurs in the actinide series of the periodic table. It is the first transuranic element, meaning that it is the first element to be created artificially that is heavier than uranium. Neptunium is produced in nuclear reactors and is used in nuclear weapons. It has a half-life of 2.14 million years.
Neptunium Atomic Number and Electronic Configuration
Neptunium has an atomic number of 93 and an electronic configuration of [Rn] 5f145d6s2.
Properties of Neptunium
Neptunium is a silvery-white metal that tarnishes quickly in the air and has a density of 19.1 g/cm3. It is a fairly reactive metal and reacts with water to form neptunium oxide. Neptunium has a melting point of 639.4°C and a boiling point of 4,564°C. It is a radioactive element with a half-life of 2.14 million years.
Uses of Neptunium
Neptunium is a radioactive element that has a few practical uses. It is used in some types of smoke detectors, as well as in some medical treatments. It is also used in some research applications.
