Question

what is the formula for an ionic compound containing sc^{3+} and o^{2-} ions? answer: a sc_{2}o b sc_{2}o_{3} c sco_{3} d sco_{2}

Explanation:

Step1: Determine the charge balance

For an ionic compound, the total positive charge must equal the total negative charge. Let the formula be \(Sc_xO_y\). The charge on \(Sc^{3 + }\) is \(+3\) and on \(O^{2 - }\) is \(-2\). So, \(3x=2y\).

Step2: Find the smallest whole - number ratio

We want to find the smallest non - zero integers \(x\) and \(y\) that satisfy \(3x = 2y\). When \(x = 2\) and \(y=3\), \(3\times2=2\times3 = 6\).

Answer:

B. \(Sc_2O_3\)