Question

use the naming rules to type the names of the covalent compounds below:
tetrasulfur tetranitride
?
oxygen difluoride
?
phosphorus pentachloride
?

Explanation:

Step1: Analyze tetrasulfur tetranitride

For covalent compounds, prefixes indicate the number of atoms. "Tetra-" means 4. So sulfur (S) has 4 atoms, nitrogen (N) has 4 atoms. The formula is $S_4N_4$.

Step2: Analyze oxygen difluoride

"Oxygen" is O, "di-" means 2 for fluoride (F). So the formula is $OF_2$.

Step3: Analyze phosphorus pentachloride

"Phosphorus" is P, "penta-" means 5 for chloride (Cl). So the formula is $PCl_5$.

Answer:

• tetrasulfur tetranitride: $\boldsymbol{S_4N_4}$
• oxygen difluoride: $\boldsymbol{OF_2}$
• phosphorus pentachloride: $\boldsymbol{PCl_5}$