A compound contains three elements A, B and C, if the oxidation of A = + 2, B = + 5 and C = - 2, the — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: A stable, neutral compound must have a net electrical charge of zero. Step 2: Test the chemical formula A3(BC4)2 with the given oxidation states (A = +2, B = +5, C = -2). The total charge of the polyatomic anion (BC4) is: (+5) + 4 * (-2) = -3. Step 3: The formula contains three ions of A^2+ (3 * +2 = +6) and two ions of (BC4)^3- (2 * -3 = -6). The sum of the charges is +6 + (-6) = 0. Therefore, the neutral formula is A3(BC4)2, corresponding to option (b).