Oxygen is a weaker oxidant and inherently more likely to form covalent bonds, but it only forms molecules with six metals ( manganese heptoxide, technetium heptoxide, ruthenium tetroxide, osmium tetroxide, plutonium tetroxide, and iridium tetroxide ).
12.
Dichlorine heptoxide ( Cl 2 O 7 ) is the anhydride of perchloric acid ( HClO 4 ) and can readily be obtained from it by dehydrating it with phosphoric acid at " 10 �C and then distilling the product at " 35 �C and 1 mmHg.
