Question

name the following ionic species. cs₃n
cesium nitrogen
cesium nitride
calcium nitride
tricarbon nitride

Explanation:

• For ionic compounds, the naming rule is to name the cation first and then the anion.
• The cation here is cesium (\(Cs^+\)) and the anion is nitride (\(N^{3 - }\)). When naming, we use the name of the metal (cesium) and change the ending of the non - metal (nitrogen) to - ide (nitride).
• Option 1: “cesium nitrogen” is incorrect because for ionic compounds, we don't just use the element name for the non - metal part like this.
• Option 3: “calcium nitride” is wrong as the cation in the given formula is \(Cs^+\) (cesium), not \(Ca^{2+}\) (calcium).
• Option 4: “tricarbon nitride” is incorrect. The formula \(Cs_3N\) has cesium (\(Cs\)) cations, not carbon (\(C\)) atoms.

Answer:

B. cesium nitride