We elaborate the uses of Neptunium and atomic properties with characteristics. Neptunium is a chemical element with a metallic silver appearance with atomic number 93. Its symbol is Np and it belongs to the group of actinides and its usual state in nature is solid. Neptunium is located at position 93 on the periodic table.
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On this page you can discover the chemical properties of neptunium and information about neptunium and other elements of the periodic table such as cerium, praseodymium, neodymium or promethium. You will also learn what neptunium is for and you will know what its uses through its properties associated with neptunium such as its atomic number or the usual state in which neptunium can be found.
You will be able to see qualities of neptunium such as its melting and boiling point, its magnetic properties or what its chemical symbol is. Also, here you will find information about its atomic properties such as the distribution of electrons in neptunium atoms and other properties.
For some elements, part of this information is unknown. In these cases we show the properties attributed to them.
Neptunium properties
Neptunium is part of the group of actinides. Actinides that have a higher atomic number cannot be found in nature and their life span is shorter. All isotopes of the actinide group, including neptunium, are radioactive.
The state of neptunium in its natural form is solid. Neptunium is a chemical element with a metallic silver appearance and belongs to the group of actinides. The atomic number for neptunium is 93. The chemical symbol for neptunium is Np. Neptunium’s melting point is 910 degrees Kelvin or 637.85 degrees Celsius or degrees Celsius. Neptunium’s boiling point is 4273 degrees Kelvin or 4000.85 degrees Celsius or degrees Celsius.
Atomic properties of neptunium
The atomic mass of an element is determined by the total mass of neutrons and protons that can be found in a single atom belonging to this element. Regarding its position within the periodic table of elements, it can be found in period 7. Neptunium has an atomic mass of 237 u.
The electron configuration of neptunium is [Rn] 5f46d17s2. The electronic configuration of the elements determines the way in which the electrons are structured in the atoms of an element. The mean radius of the neptunium is 175 pm.
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Neptunium characteristics
Below you can see a table that shows the main characteristics that neptunium has.
| Neptunium | ||
|---|---|---|
| Chemical symbol | Np | |
| Atomic number | 93 | |
| Period | 7 | |
| Appearance | metallic silver | |
| Block | F | |
| Density | 20,250 kg / m3 | |
| Atomic mass | 237 u | |
| Medium radius | 175 pm | |
| Electronic configuration | [Rn] 5f46d17s2 | |
| Oxidation states | 6, 5, 4, 3 (amphoteric) | |
| Crystal structure | triple: orthorhombic, tetragonal and cubic | |
| State | solid | |
| Melting point | 910K | |
| Boiling point | 4273K | |
| Heat of fusion | 5.19 kJ / mol | |
| Electronegativity | 1.36 (Pauling) | |
| Electric conductivity | 0.822 × 106 m-1 Ω-1 | |
| Thermal conductivity | 6.3 W / (m K) | |
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