The rules of inorganic nomenclature show that this name should be that of a compound that contains 4 ("tetra") arsenic atoms and 7 ("hept") oxygen atoms in each molecule. Therefore, its formula should be As4O7. Whether the compound actually exists and if so, what its properties are, is beyond the intended scope of this answer.
This compound is called tetraarsenic pentasulfide.
Dichlorine heptoxide is the anhydride of perchloric acid. Cl2O7 + H2O ---> 2HClO4
Tetraphosphorous heptoxide
cl2o7
42.
The formula Cl2O7 is dichlorine heptoxide, a chemical compound. The boiling point of dichlorine heptoxide is 179.6 degrees Fahrenheit, which is 82 degrees Celsius.
This compound is called tetraarsenic pentasulfide.
Dichlorine heptoxide is the anhydride of perchloric acid. Cl2O7 + H2O ---> 2HClO4
Tetraphosphorous heptoxide
cl2o7
42.
Dichlorine Heptoxide
Disulfur heptoxide
Br2O7
There is no such thing a CI2O7. However, Cl2O7 (with a lowercase L) is dichlorine heptoxide.
As4-O10 Numbers are subscripts.
Tetraphosphorus heptoxide is written as the compound p407. Is the also knows as a phosphorus that has two oxides that have a base in white phosphorus element.