ksp = 2S²
= 2 [ 7.9* 10-⁴ moldm-³ ]²
= 124.82 * 10-⁸ mol² dm-⁶
The charges of iron and phosphide has to be known to get the formula of the compound iron (III) phosphide. <span>F<span>e3+ is the formula of iron with charge here and </span></span>P<span>3<span>− is the formula and charge of phosphide. The formula of the compound is FeP. I hope that this is the answer that has actually helped you.</span></span>
The properties of a compound are different than the properties of the element that forms it