Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine Problem 15
Draw the Lewis structure with lowest formal charges, and determine the charge of each atom in (a) \(\mathrm{CN}^{-} ;\) (b) \(\mathrm{ClO}^{-}\).
Problem 17
Draw a Lewis structure for a resonance form of each ion with the lowest possible formal charges, show the charges, and give oxidation numbers of the atoms: (a) \(\mathrm{BrO}_{3}^{-} ;\) (b) \(\mathrm{SO}_{3}^{2-}\)
Problem 18
Draw a Lewis structure for a resonance form of each ion with the lowest possible formal charges, show the charges, and give oxidation numbers of the atoms: (a) \(\mathrm{AsO}_{4}^{3-} ;\) (b) \(\mathrm{ClO}_{2}^{-}\)
Problem 19
These species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception: (a) \(\mathrm{BH}_{3}\) (b) \(\mathrm{AsF}_{4}^{-}\) (c) \(\mathrm{SeCl}_{4}\)
Problem 20
These species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception: (a) \(\mathrm{PF}_{6}^{-}\) (b) \(\mathrm{ClO}_{3}\) (c) \(\mathrm{H}_{3} \mathrm{PO}_{3}\) (one \(\mathrm{P}-\mathrm{H}\) bond \()\)
Problem 21
These species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception: (a) \(\mathrm{BrF}_{3}\) (b) \(\mathrm{ICl}_{2}^{-}\) (c) \(\mathrm{BeF}_{2}\)
Problem 22
These species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception: (a) \(\mathrm{O}_{3}^{-}\) (b) \(\mathrm{XeF}_{2}\) (c) \(\mathrm{SbF}_{4}^{-}\)
Problem 24
Despite many attempts, the perbromate ion \(\left(\mathrm{BrO}_{4}^{-}\right)\) was not prepared in the laboratory until about \(1970 .\) (In fact, articles were published explaining theoretically why it could never be prepared!) Draw a Lewis structure for \(\mathrm{BrO}_{4}^{-}\) in which all atoms have lowest formal charges.
Problem 25
Cryolite \(\left(\mathrm{Na}_{3} \mathrm{AlF}_{6}\right)\) is an indispensable component in the electrochemical production of aluminum. Draw a Lewis structure for the \(\mathrm{AlF}_{6}^{3-}\) ion.
Problem 34
Determine the electron-group arrangement, molecular shape, and ideal bond angle(s) for each of the following: (a) \(\mathrm{O}_{3}\) (b) \(\mathrm{H}_{3} \mathrm{O}^{+}\) (c) \(\mathrm{NF}_{3}\)
