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Ch.8 - Basic Concepts of Chemical Bonding
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All textbooksBrown 14th EditionCh.8 - Basic Concepts of Chemical BondingProblem 64

Chapter 8, Problem 64

Draw the Lewis structures for each of the following molecules or ions. Identify instances where the octet rule is not obeyed; state which atom in each compound does not follow the octet rule; and state how many electrons surround these atoms: (a) PF6-, (b) BeCl2, (c) NH3, (d) XeF2O (the Xe is the central atom), (e) SO42- .

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Hi everyone here we have a question asking a what is the lewiS structure for? Mono sulfur? Penta florin B does mono sulfur Penta flooring follow the octet rule, if not which adam does not follow and see how many electrons around each atom. In mona's software Penta fluoride. So first we're going to draw our Lewis structure. We have sulfur in the middle with a lone pair and a negative charge surrounded by five floor Eanes, each with a filled octet, So three lone pairs. And that is our answer for A And now B does it follow the octet rule? If not which adam does not follow Sulfur is surrounded by five bonds. So it is an expanded octet. So it does not follow the octet rule. So that is our answer for B. And lastly how many electrons surround each atom. Sulfur is surrounded by five bonds In one lone pair, Which adds up to 12 electrons. Boring is surrounded by one bond And three lone pair. So it adds up to eight electrons. And that is our final answer. Thank you for watching. Bye.
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Related Practice
Textbook Question

Mothballs are composed of naphthalene, C10H8, a molecule that consists of two six-membered rings of carbon fused along an edge, as shown in this incomplete Lewis structure:

(c) Not all of the C—C bond lengths in naphthalene are equivalent. Based on your resonance structures, how many C—C bonds in the molecule do you expect to be shorter than the others?

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Textbook Question

(b) Which of these compounds or ions is an exception to the octet rule: borohydride (BH4-), borazine (B3N3H6, which is analogous to benzene with alternating B and N in the ring), or boron trichloride?

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Textbook Question
For Group 13–17 elements in the third row of the periodic table and beyond, the octet rule is often not obeyed. A friend of yours says this is because these heavier elements are more likely to make double or triple bonds. Another friend of yours says that this is because the heavier elements are larger and can make bonds to more than four atoms at a time. Which friend is more correct?
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Textbook Question

In the vapor phase, BeCl2 exists as a discrete molecule. (a) Draw the Lewis structure of this molecule, using only single bonds. Does this Lewis structure satisfy the octet rule?

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Textbook Question

In the vapor phase, BeCl2 exists as a discrete molecule. (c) On the basis of the formal charges, which Lewis structure is expected to be dominant for BeCl2?

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Textbook Question

(a) Describe the molecule xenon trioxide, XeO3, using four possible Lewis structures, one each with zero, one, two, or three Xe¬O double bonds. (b) Do any of these resonance structures satisfy the octet rule for every atom in the molecule? (c) Do any of the four Lewis structures have multiple resonance structures? If so, how many resonance structures do you find? (d) Which of the Lewis structures in part (a) yields the most favorable formal charges for the molecule?

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