Concept explainers
Interpretation: It should be determined for the number of lone pair of electron are present on the central atom
Concept Introduction:
Resonance structures:
A molecule or ion which show more than structure but none of them are accurately correct show the known property of that molecule, and can lie between the canonical structure is known as resonance or canonical or contributing structure.
Polarity is the separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multiple moments.
Polar molecule must contain polar bond due to presence of electronegativity dereference between the bonded atoms.
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Chapter 8 Solutions
Bundle: Chemistry & Chemical Reactivity, Loose-Leaf Version, 9th + OWLv2, 4 terms (24 Months) Printed Access Card
- Carbon monoxide (CO) has a very small dipole moment (0.122) despite having a polar C-O bond. Using resonance structures, please explain this conclusion.arrow_forwardChloral (Cl₃C—CH=O) forms a monohydrate, chloralhydrate, the sleep-inducing depressant called “knockout drops”in old movies. (a) Write two possible structures for chloral hy-drate, one involving hydrogen bonding and one that is a Lewis adduct. (b) What spectroscopic method could be used to identify the real structure? Explain.arrow_forwardMothballs are composed of naphthalene, C10H8, a moleculethat consists of two six-membered rings of carbonfused along an edge, as shown in this incomplete Lewisstructure:(a) Draw all of the resonance structures of naphthalene.How many are there? (b) Do you expect the C¬C bondlengths in the molecule to be similar to those of C¬Csingle bonds, C“C double bonds, or intermediate betweenC¬C single and C“C double bonds? (c) Not allof the C¬C bond lengths in naphthalene are equivalent.Based on your resonance structures, how many C¬Cbonds in the molecule do you expect to be shorter thanthe others?arrow_forward
- Which of the following is the correct setup and answer for the formal charge of sulfur in SH2? Select one: a. FC = 6 - (2 + 4) = 0 b. FC = 4 - (2 + 4) = -2 c. FC = 4 - (2 + 2) = 0 d. FC = 6 - (2 + 2) = +2arrow_forwardDraw a Lewis structure of XeF4 in which Xe is the central atom. How many electron clouds are there on the central atom?arrow_forwardWhich has the greater bond lengths: NO2 or NO3? Explain.arrow_forward
- Following are the structures of three isomers of difluorobenzene, C6H4F2. Are any of them nonpolar?arrow_forwardIn each of the following molecules, a central atom is surrounded by a total of three atoms or unshared electron pairs: SnCl2, BCl3, SO2. In which of these molecules would you expect the bond angle to be less than 120? Explain your reasoning.arrow_forwardConsider the following molecules: SiH4, PH3, H2S. In each case, a central atom is surrounded by four electron pairs. In which of these molecules would you expect the bond angle to be less than 109.5? Explain your reasoning.arrow_forward
- Explain why CF4 and Xef4 are nonpolar compounds (have no net dipole moments) while SF4 is polar (has a net dipo le moment). Is CO2 polar? What about COS?arrow_forward7.56 Draw the Lewis dot structures of the following compounds and identify the number of pi bonds in each. (a) Cl2O , (b) H2CCH2 , (c) HCCCN , (d) SiO2arrow_forward7.40 Why is it impossible for hydrogen to be the central atom in the Lewis structure of a polyatomic molecule?arrow_forward
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