name | ionic or covalent? | formula
iron (ii) fluoride | |
sodium sulfite | |
tricarbon heptahydride | |
aluminum sulfide | |
gold (iii) phosphide | |
monosulfur dioxide | |

Question

Accepted Answer

# Explanation:
## Step 1: Iron (II) Fluoride
- **Ionic or Covalent?**: Ionic (metal + non - metal)
- **Formula**: Iron (II) has a charge of $+2$, fluoride ($F^-$) has a charge of $-1$. To balance charges, we need 2 fluorides for 1 iron. So formula is $FeF_2$

## Step 2: Sodium Sulfide
- **Ionic or Covalent?**: Ionic (sodium is metal, sulfide is non - metal)
- **Formula**: Sodium ($Na^+$) has a charge of $+1$, sulfide ($S^{2 -}$) has a charge of $-2$. We need 2 sodium ions for 1 sulfide ion. Formula is $Na_2S$

## Step 3: Tricarbon Heptahydride
- **Ionic or Covalent?**: Covalent (composed of non - metals, carbon and hydrogen)
- **Formula**: The prefixes tell us the number of atoms. Tri - carbon means 3 C, hepta - hydride means 7 H. So formula is $C_3H_7$ (Note: This is also known as propyl hydride, but based on prefixes, $C_3H_7$)

## Step 4: Aluminum Sulfide
- **Ionic or Covalent?**: Ionic (aluminum is metal, sulfide is non - metal)
- **Formula**: Aluminum ($Al^{3+}$) has a charge of $+3$, sulfide ($S^{2 -}$) has a charge of $-2$. Using the criss - cross method, $Al_2S_3$ (3 from S, 2 from Al)

## Step 5: Gold (III) Phosphide
- **Ionic or Covalent?**: Ionic (gold is metal, phosphide is non - metal)
- **Formula**: Gold (III) has a charge of $+3$, phosphide ($P^{3 -}$) has a charge of $-3$. So formula is $AuP$ (charges balance 3+ and 3 -)

## Step 6: Monosulfur Dioxide
- **Ionic or Covalent?**: Covalent (sulfur and oxygen are non - metals)
- **Formula**: Mono - sulfur means 1 S, di - oxide means 2 O. Formula is $SO_2$ (mono - is often omitted in the name of the first element in covalent compounds, but based on the given name "monosulfur dioxide", it is $SO_2$)

# Answer:
| Name | Ionic or Covalent? | Formula |
|------|---------------------|---------|
| Iron (II) Fluoride | Ionic | $FeF_2$ |
| Sodium Sulfide | Ionic | $Na_2S$ |
| Tricarbon Heptahydride | Covalent | $C_3H_7$ |
| Aluminum Sulfide | Ionic | $Al_2S_3$ |
| Gold (III) Phosphide | Ionic | $AuP$ |
| Monosulfur Dioxide | Covalent | $SO_2$ |

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QUESTION IMAGE

Question

Explanation:

Step 1: Iron (II) Fluoride

Step 2: Sodium Sulfide

Step 3: Tricarbon Heptahydride

Step 4: Aluminum Sulfide

Step 5: Gold (III) Phosphide

Step 6: Monosulfur Dioxide

Answer:

Name	Ionic or Covalent?	Formula
Sodium Sulfide	Ionic	\(Na_2S\)
Tricarbon Heptahydride	Covalent	\(C_3H_7\)
Aluminum Sulfide	Ionic	\(Al_2S_3\)
Gold (III) Phosphide	Ionic	\(AuP\)
Monosulfur Dioxide	Covalent	\(SO_2\)