Neptunium

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Neptunium
Neptunium
General Info
Atomic Symbol Np
Atomic Number 93
Atomic Weight 237 g/mol237 amu
Chemical series Actinides
Appearance silvery metallic
Group, Period, Block
Electron configuration
Electrons per shell
CAS number 7439-99-8
Physical properties
Phase solid
Density 20.2 g/cm3
Melting point 910 K636.85 °C
1,178.33 °F
1,638 °R
Boiling point 4273 K3,999.85 °C
7,231.73 °F
7,691.4 °R
Isotopes of Neptunium
iso NA half-life DT DE (MeV) DP
is stable with neutrons.
All properties are for STP unless otherwise stated.

Neptunium is the 93rd element, an actinide with no stable isotopes.


See Also

Facts about NeptuniumRDF feed
Atomic number 93  +
Atomic symbol Np  +
Atomic weight 237 g/mol (237 amu)  +
Boiling point 4,273 K (3,999.85 °C, 7,231.73 °F, 7,691.4 °R)  +
Melting point 910 K (636.85 °C, 1,178.33 °F, 1,638 °R)  +
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