Question

question 79 (1 point) listen the correct names of ca₃n₂ and ba₃n₂ are: 1) calcium nitrogen and barium nitrogen 2) cobalt nitride and beryllium nitride 3) calcium nitride and barium nitride 4) carbon nitride and boron nitride

Explanation:

Step1: Identify the ions

For \( \text{Ca}_3\text{N}_2 \), \( \text{Ca} \) is calcium (group 2, forms \( \text{Ca}^{2+} \)) and \( \text{N} \) is nitrogen (forms \( \text{N}^{3-} \) in this compound). For \( \text{Ba}_3\text{N}_2 \), \( \text{Ba} \) is barium (group 2, forms \( \text{Ba}^{2+} \)) and \( \text{N} \) is nitrogen ( \( \text{N}^{3-} \) ).

Step2: Name the compounds

Ionic compounds are named by cation first, then anion. The anion for nitrogen here is nitride (\( \text{N}^{3-} \)). So \( \text{Ca}_3\text{N}_2 \) is calcium nitride, \( \text{Ba}_3\text{N}_2 \) is barium nitride. Now check options:

• Option 1: Wrong, uses "nitrogen" not "nitride".
• Option 2: Wrong, cations are wrong (cobalt, beryllium instead of calcium, barium).
• Option 3: Correct, names are calcium nitride and barium nitride.
• Option 4: Wrong, cations are carbon, boron instead of calcium, barium.

Answer:

1. Calcium nitride and Barium Nitride