Question

What subscripts would properly complete the formula unit Al_N_?

Answer 1

Look at your periodic table. What is the known charge for Aluminum, and Nitrogen?

Answer 2

3 for AL and 3- for Nitrogen

Answer 3

I was just confused because the answer choices are
1,1
1,3
3,1,
and 3,3. Do they want the 1,1 which is what it would be when properly reduced, or the 3,3?

Answer 4

Well, Al\(_3\)N\(_3\) would NOT exist, so yes 1, 1 would be correct for aluminum nitride.

Answer 5

Thank you!!