A certain diatomic molecule AB has a measured dipole moment of and an internuclear distance of . Wha — Chemical Bonding Chemistry Question
Question
A certain diatomic molecule AB has a measured dipole moment of $1.2\text{ D}$ and an internuclear distance of $1.0\text{ \AA}$. What is the approximate percentage of electronic charge existing on the more electronegative atom?
Answer: B
💡 Solution & Explanation
The theoretical dipole moment for 100% ionic character = $q \times d = (4.8 \times 10^{-10}\text{ esu}) \times (1.0 \times 10^{-8}\text{ cm}) = 4.8\text{ D}$. Percentage ionic charge = $(1.2 / 4.8) \times 100 = 25\%$.
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