Question

a. if₇
b. p₂o₅
c. n₂o₅
which shows the correct names for these compounds?
a. iodide heptafluorine
b. diphosphorus pentaoxide
c. dinitride pentaoxygen
a. iodine heptafluoride
b. pentaphosphorus dioxide
c. pentanitrogen dioxide

Explanation:

For binary covalent compounds, prefixes are used to indicate the number of atoms of each element. In $IF_7$, 'hepta -' means 7 and it is iodine heptafluoride. In $P_2O_5$, 'di -' for 2 and 'penta -' for 5, so it is diphosphorus pentaoxide. In $N_2O_5$, it is dinitrogen pentoxide.

Answer:

A. iodine heptafluoride
B. diphosphorus pentaoxide
C. dinitrogen pentoxide