Loading…
neptunium
chemical element with symbol Np and atomic number 93
Details
- Instance of
- chemical element
- atomic number
- 93
- boiling point
- 4175.0
- bulk modulus
- 166958000000.0
- canonical SMILES
- [Np]
- chemical formula
- Np
- density
- 21731.7
- described by source
- Armenian Soviet Encyclopedia
- different from
- Neptun
- discoverer or inventor
- Edwin McMillan, Philip Abelson
- electrical conductivity
- 820000.0
- electronegativity
- 1.36
- element symbol
- Np
- ionic radius
- 1.01, 0.87, 0.75, 0.72
- melting point
- 913.0
- named after
- Neptune
- Poisson's ratio
- 0.226
- shear modulus
- 112037000000.0
- thermal conductivity
- 6.3
- time of discovery or invention
- 1940
- topic's main category
- Category:Neptunium
- Unicode character
- 錼
Nothing in the MetaHistoryBook collection references this item yet.