Question

use the naming rules to type the names of the covalent compounds below.
cf₄
p₂o₃
n₂o₅
greek prefixes
mono → 1
di → 2
tri → 3
tetra → 4
penta → 5
hexa → 6
hepta → 7
octa → 8
nona → 9
deca → 10

Explanation:

Step1: Name \( \text{CF}_4 \)

For \( \text{CF}_4 \), the first element is carbon (C), and the second is fluorine (F). The subscript of C is 1 (so we can use "mono" but for the first element, if subscript is 1, we usually omit the prefix), and the subscript of F is 4, so we use the prefix "tetra". Fluorine becomes "fluoride" in the covalent naming (or "fluorine" with prefix, but for covalent, we use the root + -ide). So it's carbon tetrafluoride.

Step2: Name \( \text{P}_2\text{O}_3 \)

First element is phosphorus (P) with subscript 2, so prefix "di". Second element is oxygen (O) with subscript 3, prefix "tri". So it's diphosphorus trioxide.

Step3: Name \( \text{N}_2\text{O}_5 \)

First element is nitrogen (N) with subscript 2, prefix "di". Second element is oxygen (O) with subscript 5, prefix "penta". So it's dinitrogen pentoxide.

Answer:

• \( \text{CF}_4 \): Carbon Tetrafluoride
• \( \text{P}_2\text{O}_3 \): Diphosphorus Trioxide
• \( \text{N}_2\text{O}_5 \): Dinitrogen Pentoxide