The most common type of exception to the octet rule are compounds or ions with central atoms having more than eight electrons around them. PF5, SF4, ClF3, and Br3- are examples of this type of exception. Draw the Lewis structures for these compounds or ions. Which elements, when they have to, can have more than eight electrons around them? How is this rationalized?
Answer to relevant QuestionsSF6, ClF5, and XeF4 are three compounds whose central atoms do not follow the octet rule. Draw Lewis structures for these compounds. Use formal charge arguments to explain why CO has a much smaller dipole moment than would be expected on the basis of electronegativity. Benzoic acid is a food preservative. The space-filling model for benzoic acid is shown below. Draw the Lewis structure for benzoic acid, including all resonance structures in which all atoms have a formal charge of zero. Which of the molecules in Exercise 88 have net dipole moments (are polar)? SeO3 SeO2 PCl3 SCl2 SiF4 Which of the following molecules have net dipole moments? For the molecules that are polar, indicate the polarity of each bond and the direction of the net dipole moment of the molecule. a. CH2Cl2, CHCl3, CCl4 b. CO2, N2O c. ...
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