Actinide
Oxides and hydroxides

Actinide

Section Title: Oxides and hydroxides
Table Section Text: None

Chemical formula	ThO2	PaO2	UO2	NpO2	PuO2	AmO2	CmO2	BkO2	CfO2

CAS-number	1314-20-1	12036-03-2	1344-57-6	12035-79-9	12059-95-9	12005-67-3	12016-67-0	12010-84-3	12015-10-0

Molar mass	264.04	263.035	270.03	269.047	276.063	275.06	270–284**	279.069	283.078

Melting point	3390 °C	2865 °C	2547 °C	2400 °C	2175 °C

Crystal structure	-

Space group	Fm3m

Coordination number	An[8], O[4]

Sentence(s)

Thorium dioxide has the highest melting point of 3390 °C.

final_sentence: Thorium dioxide has the highest melting point of 3390 °C.