Based on the table. Describe the periodic trend in percent ionic character of th

Question

Based on the table. Describe the periodic trend in percent ionic character of these bonds. Which neutral diatomic species has the most covalent bond?

13.26 Based on the following table, describe the periodic trend in percent ionic character of these bonds. Which neutral diatomic species has the most covalent bond? Does this agree with your expectation based on electronegativity differences? Species BH CH NH OH FH /debye 1.733 1.570 1.627 1.780 1.942 eR/debye 5.936 5.398 4.985 4.661 4.405 R/pm 123.6 112.4 103.8 97.05 91.71

Explanation / Answer

Percent ionic character is increasing from BH to FH. This is in agreement with the electronegativity differences as going from B to H, electronegativity of elements increasing, but the electronegativity of H remains constant. BH has the most covalent character as a diatomic molecule in neutral form.

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