Question

al³+p³-: what will be the formula for aluminum phosphide? aip al₃p₃ al₂p

Explanation:

Step1: Cross - multiply the charges

The charge on \(Al^{3 +}\) is \(+ 3\) and on \(P^{3-}\) is \(-3\). When forming a compound, we cross - multiply the magnitudes of the charges (ignoring the signs). The magnitude of the charge on \(Al\) is \(3\) and on \(P\) is \(3\).

Step2: Simplify the formula

The formula after cross - multiplying would be \(Al_{3}P_{3}\). But we can simplify it by dividing both sub - scripts by their greatest common divisor (which is \(3\) in this case). So, \(\frac{3}{3}=1\) for both \(Al\) and \(P\).

Answer:

A. AIP