NEPTUNIUM(IV) OXIDE - (12035-79-9)

Introduction

Name: neptunium(IV) oxide
* IUPAC
CAS Number: 12035-79-9
Chemical Formula: NpO2
Molar Mass: 268.9988 g
Mass Percent: Np 88.104 %; O 11.895 % 

Classification

• inorganic

Bonding

Bonding: ionic
Ionic Character: 64.85 %

Thermochemistry

ΔHf° (s): -246 kcal/mol 1 = -1,029.26 kJ/mol
S° (s): 19.2 cal/(mol•K) 2 = 80.33 J/(mol•K)
ΔGf° (s): -234 kcal/mol 3 = -979.06 kJ/mol

For More Information

Sources

(1) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(2) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.