Answer : The name of is, diphosphorus tetroxide.
The name of is, tetraphosphorus heptoxide.
The name of is, diphosphorus pentoxide.
Explanation :
The given compounds are a covalent compounds because sharing of electrons takes place between phosphorous and oxygen. Both the elements are non-metals and hence, will form covalent bond.
The naming of covalent compound is given by:
The less electronegative element is named first.
The more electronegative element is named then, and a suffix is added with it. The suffix added is '-ide'.
If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on.