Americium dioxide

Americium dioxide
Names
	IUPAC name Americium(IV) oxide
Identifiers
CAS Number	12005-67-3 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.031.324
EC Number	234-471-0;
PubChem CID	57461988;
CompTox Dashboard (EPA)	DTXSID40894182 ;
	InChI InChI=1S/Am.2O/q+4;2*-2 Key: GABXYUQCUHMHDP-UHFFFAOYSA-N ;
	SMILES [O--].[O--].[Am+4];
Properties
Chemical formula	AmO2
Molar mass	275 g·mol−1
Appearance	Black crystals
Density	11.68 g/cm3
Melting point	2,113 °C (3,835 °F; 2,386 K)
Structure
Crystal structure	Fluorite (cubic), cF12
Space group	Fm3m, No. 225
Lattice constant	a = 537.6 pm
Formula units (Z)	4
Related compounds
Other cations	Plutonium(IV) oxide; Curium(IV) oxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Americium dioxide (AmO₂) is a black^[2] compound of americium. In the solid state, AmO₂ adopts a fluorite structure (like CaF₂).^[3] It is used as a source of alpha particles.

^ ^a ^b Christine Guéneau; Alain Chartier; Paul Fossati; Laurent Van Brutzel; Philippe Martin (2020). "Thermodynamic and Thermophysical Properties of the Actinide Oxides". Comprehensive Nuclear Materials 2nd Ed. 7: 111–154. doi:10.1016/B978-0-12-803581-8.11786-2. ISBN 9780081028667. S2CID 261051636.
^ Greenwood, Norman N. & Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Pergamon Press. p. 1267. ISBN 978-0750633659. LCCN 97036336. OCLC 1005231772. OL 689297M.
^ Wells, Alexander Frank (1984). Structural inorganic chemistry. Oxford: Clarendon Press. ISBN 978-0-19-855370-0.