question\nicl4 ionic compound\ncs2s molecular compound\nk2s molecular compound\nmno2 ionic compound\nn2o…

Explanation:

Step1: Recall compound - type rules

Ionic compounds are usually formed between metals and non - metals. Molecular compounds are formed between non - metals.

Step2: Analyze each compound

• $\text{ICl}_4$: Iodine (I) and chlorine (Cl) are non - metals, so it is a molecular compound.
• $\text{Cs}_2\text{S}$: Cesium (Cs) is a metal and sulfur (S) is a non - metal, so it is an ionic compound.
• $\text{K}_2\text{S}$: Potassium (K) is a metal and sulfur (S) is a non - metal, so it is an ionic compound.
• $\text{MnO}_2$: Manganese (Mn) is a metal and oxygen (O) is a non - metal, so it is an ionic compound.
• $\text{N}_2\text{O}$: Nitrogen (N) and oxygen (O) are non - metals, so it is a molecular compound.
• $\text{PBr}_5$: Phosphorus (P) and bromine (Br) are non - metals, so it is a molecular compound.

Answer:

B. $\text{ICl}_4$: Molecular Compound, $\text{Cs}_2\text{S}$: Ionic Compound, $\text{K}_2\text{S}$: Ionic Compound, $\text{MnO}_2$: Ionic Compound, $\text{N}_2\text{O}$: Molecular Compound, $\text{PBr}_5$: Molecular Compound