Question

5 fill in the blank 2 points answer the following parts of question #14: a. total number of electron domains: 4 b. number of bonded domains: 4 c. number of non - bonded domains: 0 d. molecular geometry: tetrahedral e. bond angle(s): 109.5 f. polar or non - polar: polar g. resonance? 4 h. exception? expanded octet 6 essay 2 points given the formula fe₂(so₄)₃, name the compound and explain why roman numerals are

Explanation:

Step1: Identify the compound

The compound is $\ce{Fe2(SO4)3}$. The sulfate ion $\ce{SO4^{2 - }}$ has a charge of - 2. There are 3 sulfate ions, so the total negative charge is - 6.

Step2: Determine the charge of iron

Since the compound is neutral, and the total negative charge from sulfate is - 6, and there are 2 iron atoms, each iron atom must have a charge of + 3.

Step3: Name the compound

The name of the compound is iron(III) sulfate. We use Roman numerals in the name because iron is a transition - metal and can have multiple oxidation states. The Roman numeral (III) indicates the + 3 oxidation state of iron in this compound.

Answer:

The compound is iron(III) sulfate. Roman numerals are used because iron is a transition - metal with multiple oxidation states, and the (III) indicates the + 3 oxidation state of iron in this compound.