Question

write the formula for each compound. capitalization and subscripts are graded. selenium tetrafluoride: oxygen difluoride: dinitrogen monoxide: phosphorus trichloride:

Explanation:

Step1: Identify elements and prefixes for selenium tetrafluoride

Selenium is Se, tetra - means 4 for fluorine.
$SeF_4$

Step2: Identify elements and prefixes for oxygen difluoride

Oxygen is O, di - means 2 for fluorine.
$OF_2$

Step3: Identify elements and prefixes for dinitrogen monoxide

Nitrogen is N, di - means 2 for nitrogen, mono - means 1 for oxygen.
$N_2O$

Step4: Identify elements and prefixes for phosphorus trichloride

Phosphorus is P, tri - means 3 for chlorine.
$PCl_3$

Answer:

selenium tetrafluoride: $SeF_4$
oxygen difluoride: $OF_2$
dinitrogen monoxide: $N_2O$
phosphorus trichloride: $PCl_3$