Question

periodic table high school reference sheet
which statement explains whether nacl or beo will have a stronger bond?
o a. beo will have a stronger bond because it has a smaller ionic charge and a smaller distance between ions.
o b. nacl will have a stronger bond because it has a smaller ionic charge and a smaller distance between ions.
o c. beo will have a stronger bond because it has a larger ionic charge and a smaller distance between ions.
o d. nacl will have a stronger bond because it has a smaller ionic charge and a larger distance between ions.

Explanation:

The strength of an ionic bond is determined by Coulomb's law, which states that the force of attraction (\(F\)) between two ions is given by \(F=\frac{kq_1q_2}{r^2}\), where \(k\) is a constant, \(q_1\) and \(q_2\) are the ionic charges, and \(r\) is the distance between the ions. For \(NaCl\), the ionic charges are \(q_{Na^+}=+ 1\) and \(q_{Cl^-}=-1\). For \(BeO\), the ionic charges are \(q_{Be^{2+}}=+2\) and \(q_{O^{2 -}}=-2\). Also, \(Be^{2+}\) is smaller than \(Na^+\) (\(Be^{2+}\) has a higher nuclear charge pulling electrons closer) and \(O^{2-}\) is smaller than \(Cl^-\) (due to higher effective nuclear charge for \(O^{2-}\) compared to \(Cl^-\) as \(O\) is in a smaller period). A larger ionic charge (\(q_1q_2\)) and a smaller distance (\(r\)) lead to a stronger bond.

Answer:

C. BeO will have a stronger bond because it has a larger ionic charge and a smaller distance between ions.