Concept explainers
In which of the following species does the central atom not obey the octet rule?
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Chemistry
- For each of the following, use formal charges to choose the Lewis formula that gives the best description of the electron distribution: a ClO2F b SO2 c ClO3arrow_forwardWrite reasonable Lewis structures for the following species, none of which follow the octet rule. (a) BeCl2 (b) SeO2- (c) ClO3 (d) CH3arrow_forwardExperimental evidence indicates the existence of HC3N molecules in interstellar clouds. Write a plausible Lewis structure for this molecule.arrow_forward
- Write reasonable Lewis structures for the following species, none of which follow the octet rule. (a) BF3 (b) NO (c) CO+ (d) ClO3arrow_forwardDraw Lewis structures for the following species. (The skeleton is indicated by the way the molecule is written.) (a) Cl2CO (b) H3C—CN (c) H2C—CH2arrow_forwardIn the following list of molecular formulas identify which violate the octet rule for the central atom. a) NH3 b) PCl5 c) CS2 d) ClF3 e) PCl3arrow_forward
- In which one of the following species is the central atom (the first atom in the formula) an exception to the octet rule? SF6 I2 BH4– NH3 NH4+arrow_forwardWhich of the following molecules contains a central atom that can support an expanded octet? a)SF4 b)BF3 c)O3 d)CBr4 e)CS2arrow_forwardWhat is the total of lone pairs in the best Lewis structure of NH 2F? 2 3 4 5 6arrow_forward
- Which of the following violates the octet rule? CO2 AICI O Co, O SF6arrow_forwardWhat determines which atoms are the central atoms? How do you adjust the number of electrons to form a cation? What about an anion? What causes some molecules with the same number of electron domains to have different shapes? Would they cause the real bond angle to be larger or smaller? Why? Which of the following elements should you expect to form an incomplete octet: H, He, Be, B, C, O? Why? Which of the following elements are good candidates to form an expanded octet: N, F, Ne, P, S, Cl, Ar? Why? What things must you consider when determining if a molecule is polar or non-polar?arrow_forwardWhich of the following molecules does not possess a complete octet ofelectrons around its central atom?a) CO2b) NO2c) SO2d) SiO2arrow_forward
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