Using the Hannay-Smith equation to estimate percentage ionic character, what is the calculated perce — Periodic Table and Periodicity Chemistry Question
Question
Using the Hannay-Smith equation to estimate percentage ionic character, what is the calculated percentage ionic character of a covalent bond if the electronegativity difference between the two bonded atoms is exactly $2.0$?
Answer: B
💡 Solution & Explanation
The Hannay-Smith equation is given by: $\%$ ionic character $= 16 | X_A - X_B | + 3.5(X_A - X_B)^2$. Substituting $\Delta X = 2.0$: $\%$ ionic character $= 16(2.0) + 3.5(2.0)^2 = 32 + 3.5(4) = 32 + 14 = 46\%$.
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