Question

write the names of the following covalent compounds:

1. so₃
2. n₂s
3. ph₃
4. bf₃

Explanation:

Step1: Name covalent compound $SO_3$

Use prefixes for non-metals; "sulfur" + "tri-" + "oxide" = sulfur trioxide

Step2: Name covalent compound $N_2S$

Use prefixes: "di-" + "nitrogen" + "sulfide" = dinitrogen sulfide

Step3: Name covalent compound $PH_3$

Common name for this compound is phosphine

Step4: Name covalent compound $BF_3$

Use prefixes: "boron" + "tri-" + "fluoride" = boron trifluoride

Answer:

1. sulfur trioxide
2. dinitrogen sulfide
3. phosphine
4. boron trifluoride