type the correct answer in each box. complete the chemical formula for each ionic compound. consult the…

Explanation:

Step1: Determine beryllium and nitrogen charges

Beryllium (Be) is in group 2, so it forms a $Be^{2 + }$ ion. Nitrogen (N) is in group 15, so it forms a $N^{3 - }$ ion.

Step2: Balance charges for beryllium nitride

To balance the charges, we need 3 beryllium ions ($3\times2+=6+$) and 2 nitrogen ions ($2\times3 - = 6 -$). So the formula is $Be_3N_2$.

Step3: Determine aluminum and sulfur charges

Aluminum (Al) is in group 13, so it forms an $Al^{3+}$ ion. Sulfur (S) is in group 16, so it forms a $S^{2 - }$ ion.

Step4: Balance charges for aluminum sulfide

To balance the charges, we need 2 aluminum ions ($2\times3+=6+$) and 3 sulfur ions ($3\times2 - = 6 -$). So the formula is $Al_2S_3$.

Answer:

beryllium nitride: Be 3 N 2 aluminum sulfide: Al 2 S 3