Question

write the chemical formulas for the following molecular compounds: part 1 of 4 diphosphorus pentoxide part 2 of 4 nitrogen trioxide part 3 of 4 nitrogen triiodide

Explanation:

Step1: Analyze prefixes for diphosphorus pentoxide

The prefix "di -" means 2 for phosphorus (P) and "penta -" means 5 for oxygen (O). So the formula is $P_2O_5$.

Step2: Analyze prefixes for nitrogen trioxide

The prefix "tri -" means 3 for oxygen (O), and there is 1 nitrogen (N) (since no prefix for nitrogen implies 1). So the formula is $NO_3$.

Step3: Analyze prefixes for nitrogen triiodide

The prefix "tri -" means 3 for iodine (I), and there is 1 nitrogen (N) (since no prefix for nitrogen implies 1). So the formula is $NI_3$.

Answer:

Part 1 of 4: $P_2O_5$
Part 2 of 4: $NO_3$
Part 3 of 4: $NI_3$