The chemical formula given is ICl. This is a binary compound consisting of iodine (I) and chlorine (Cl).
For binary compounds composed of two nonmetals, the name is typically formed by naming the first element followed by the second element with an "-ide" suffix. Therefore, ICl is named iodine monochloride.
The chemical formula given is \(\mathrm{SF}_{6}\). This is a binary compound consisting of sulfur (S) and fluorine (F).
For \(\mathrm{SF}_{6}\), the name is formed by naming the first element, sulfur, followed by the second element with an "-ide" suffix and a prefix indicating the number of atoms. Since there are six fluorine atoms, the prefix "hexa-" is used. Therefore, \(\mathrm{SF}_{6}\) is named sulfur hexafluoride.
The chemical formula given is \(\mathrm{I}_{4} \mathrm{O}_{9}\). This is a compound consisting of iodine (I) and oxygen (O).
For \(\mathrm{I}_{4} \mathrm{O}_{9}\), the name is formed by naming the first element, iodine, followed by the second element with an "-ide" suffix and a prefix indicating the number of atoms. Since there are four iodine atoms and nine oxygen atoms, the prefixes "tetra-" and "nona-" are used, respectively. Therefore, \(\mathrm{I}_{4} \mathrm{O}_{9}\) is named tetraiodine nonoxide.
- Part A: \(\boxed{\text{iodine monochloride}}\)
- Part B: \(\boxed{\text{sulfur hexafluoride}}\)
- Part C: \(\boxed{\text{tetraiodine nonoxide}}\)