The electronegativity values of elements and on the Pauling scale are given as and respectively. Usi — Periodic Table and Periodicity Chemistry Question
Question
The electronegativity values of elements $X$ and $Y$ on the Pauling scale are given as $3.8$ and $1.8$ respectively. Using the Hannay-Smith empirical equation, what is the calculated percentage ionic character of the $X-Y$ bond?
Answer: B
💡 Solution & Explanation
The Hannay-Smith equation to calculate the percentage ionic character is: $\%$ ionic character $= 16 | X_A - X_B | + 3.5 (X_A - X_B)^2$, where $X$ represents electronegativity. Here, the difference $\Delta X = 3.8 - 1.8 = 2.0$. Substituting this: $16(2.0) + 3.5(2.0)^2 = 32 + 3.5(4) = 32 + 14 = 46\%$.
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