Practice worksheet for naming molecular compounds, featuring a table with molecular formulas and spaces to write the corresponding compound names.

To solve the problem of naming molecular compounds based on their molecular formulas, we need to follow the rules for naming binary covalent compounds. Here's a step-by-step explanation and the solution:

Rules for Naming Binary Covalent Compounds:

1. Prefixes: Use Greek prefixes to indicate the number of atoms of each element in the molecule.
- 1: mono-
- 2: di-
- 3: tri-
- 4: tetra-
- 5: penta-
- 6: hexa-
- 7: hepta-
- 8: octa-
- 9: nona-
- 10: deca-

2. Order of Elements:
- The more electronegative element is written second.
- The less electronegative element is written first.

3. Exceptions:
- For elements ending in "-o" (like oxygen), drop the "o" before adding the suffix "-ide."
- If the compound contains only two elements, the prefix "mono-" is omitted for the first element.

Solution:

| Molecular Formula | Name of the Compound |
|-------------------|----------------------|
| CO | Carbon monoxide |
| CIF | Chlorine monofluoride |
| CO₂ | Carbon dioxide |
| CIF₅ | Chlorine pentafluoride |
| N₂O₅ | Dinitrogen pentoxide |
| PCl₅ | Phosphorus pentachloride |
| Cl₂O | Dichlorine monoxide |
| BCl₃ | Boron trichloride |
| IF₇ | Iodine heptafluoride |
| NI₃ | Nitrogen triiodide |
| CCl₄ | Carbon tetrachloride |
| SiO₂ | Silicon dioxide |

Explanation for Each Compound:

1. CO:
- Carbon (C) is less electronegative than Oxygen (O).
- Prefix "mono-" is omitted for the first element.
- Name: Carbon monoxide.

2. CIF:
- Chlorine (Cl) is more electronegative than Iodine (I).
- Prefixes are used for both elements.
- Name: Chlorine monofluoride.

3. CO₂:
- Carbon (C) is less electronegative than Oxygen (O).
- Prefix "mono-" is omitted for the first element.
- Name: Carbon dioxide.

4. CIF₅:
- Chlorine (Cl) is more electronegative than Iodine (I).
- Prefixes are used for both elements.
- Name: Chlorine pentafluoride.

5. N₂O₅:
- Nitrogen (N) is less electronegative than Oxygen (O).
- Prefixes are used for both elements.
- Name: Dinitrogen pentoxide.

6. PCl₅:
- Phosphorus (P) is less electronegative than Chlorine (Cl).
- Prefixes are used for both elements.
- Name: Phosphorus pentachloride.

7. Cl₂O:
- Chlorine (Cl) is more electronegative than Oxygen (O).
- Prefixes are used for both elements.
- Name: Dichlorine monoxide.

8. BCl₃:
- Boron (B) is less electronegative than Chlorine (Cl).
- Prefixes are used for both elements.
- Name: Boron trichloride.

9. IF₇:
- Iodine (I) is less electronegative than Fluorine (F).
- Prefixes are used for both elements.
- Name: Iodine heptafluoride.

10. NI₃:
- Nitrogen (N) is less electronegative than Iodine (I).
- Prefixes are used for both elements.
- Name: Nitrogen triiodide.

11. CCl₄:
- Carbon (C) is less electronegative than Chlorine (Cl).
- Prefixes are used for both elements.
- Name: Carbon tetrachloride.

12. SiO₂:
- Silicon (Si) is less electronegative than Oxygen (O).
- Prefix "mono-" is omitted for the first element.
- Name: Silicon dioxide.

Final Answer:

\boxed{
\begin{array}{|c|c|}
\hline
\text{Molecular Formula} & \text{Name of the Compound} \\
\hline
\text{CO} & \text{Carbon monoxide} \\
\hline
\text{CIF} & \text{Chlorine monofluoride} \\
\hline
\text{CO}_2 & \text{Carbon dioxide} \\
\hline
\text{CIF}_5 & \text{Chlorine pentafluoride} \\
\hline
\text{N}_2\text{O}_5 & \text{Dinitrogen pentoxide} \\
\hline
\text{PCl}_5 & \text{Phosphorus pentachloride} \\
\hline
\text{Cl}_2\text{O} & \text{Dichlorine monoxide} \\
\hline
\text{BCl}_3 & \text{Boron trichloride} \\
\hline
\text{IF}_7 & \text{Iodine heptafluoride} \\
\hline
\text{NI}_3 & \text{Nitrogen triiodide} \\
\hline
\text{CCl}_4 & \text{Carbon tetrachloride} \\
\hline
\text{SiO}_2 & \text{Silicon dioxide} \\
\hline
\end{array}
}