Use the rules (in order) to assign oxidation numbers to each of the elements in the compounds below.

nitrosyl fluoride F N O
NOF
chlorine pentafluoride Cl F
ClF5
sulfurous acid H S O
H2SO3

Explanation:

The oxidation number is an integer that represents the number of electrons that an atom receives or makes available to others when it forms a given compound.

The oxidation number is positive if the atom loses electrons, or shares them with an atom that has a tendency to accept them. And it will be negative when the atom gains electrons, or shares them with an atom that has a tendency to give them up.

Chemical compounds are electrically neutral. That is, the charge that all the atoms of a compound contribute must be globally null. That is, when having positive or negative charges in a compound, their sum must be zero.

There are some rules for determining oxidation numbers in compounds. Among them it is possible to mention:

Then:

the correct answer would be b) volume versus temperature, because they are also directly proportional.