Chemical Properties of neptunium (CAS 7439-99-8)

neptunium

PDF Excel Molecule Calculator
InChI
InChI=1S/Np
InChI Key
LFNLGNPSGWYGGD-UHFFFAOYSA-N
Formula
Np
SMILES
[Np]
Molecular Weight1
237.00
CAS
7439-99-8
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Physical Properties

Property Value Unit Source
IE [6.10; 6.27] eV Show Hide
IE 6.27 ± 0.00 eV NIST
IE 6.27 ± 0.00 eV NIST
IE 6.27 eV NIST
IE 6.27 ± 0.00 eV NIST
IE 6.10 ± 0.10 eV NIST
IE 6.19 ± 0.12 eV NIST
IE 6.20 ± 0.12 eV NIST
IE 6.16 ± 0.06 eV NIST

Correlations

Property Value Unit Temperature (K) Source
Pvap [1.06e-04; 0.02] kPa [2000.00; 2500.00] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.61843e+01
Coefficient B-5.06642e+04
Temperature range, min.2000.00
Temperature range, max.2500.00
Pvap 1.06e-04 kPa 2000.00 Calculated Property
Pvap 2.11e-04 kPa 2055.56 Calculated Property
Pvap 4.04e-04 kPa 2111.11 Calculated Property
Pvap 7.47e-04 kPa 2166.67 Calculated Property
Pvap 1.34e-03 kPa 2222.22 Calculated Property
Pvap 2.34e-03 kPa 2277.78 Calculated Property
Pvap 3.97e-03 kPa 2333.33 Calculated Property
Pvap 6.58e-03 kPa 2388.89 Calculated Property
Pvap 0.01 kPa 2444.44 Calculated Property
Pvap 0.02 kPa 2500.00 Calculated Property

Sources

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