Question

what is the chemical formula for aluminum nitride? a al₃ b aln₃ c al₃n₃ d aln

Explanation:

Step1: Determine oxidation states

Aluminum (Al) typically has an oxidation state of +3. Nitride ion (\(N^{3-}\)) has an oxidation state of -3.

Step2: Balance charges

To form a neutral compound, the total positive charge must equal the total negative charge. Let the formula be \(Al_xN_y\). Then \(3x = 3y\), so \(x = y = 1\)? Wait, no, wait. Wait, aluminum nitride: Al is +3, N is -3. So the formula should be \(AlN\)? Wait, no, wait, maybe I made a mistake. Wait, no, let's check again. Wait, the options: A is \(Al_3\) (no, that's just aluminum), B is \(AlN_3\), C is \(Al_3N_3\), D is \(AlN\). Wait, no, the correct formula for aluminum nitride is \(AlN\)? Wait, no, wait, aluminum has a +3 charge, nitride (\(N^{3-}\)) has -3. So the ratio is 1:1, so formula is \(AlN\). Wait, but let's confirm. The correct chemical formula for aluminum nitride is \(AlN\), so option D.

Answer:

D. AlN