Chapter 9: Problem 9
Name one ionic compound that contains only nonmetallic elements.
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Chapter 9: Problem 9
Name one ionic compound that contains only nonmetallic elements.
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Summarize the essential features of the Lewis octet rule. The octet rule applies mainly to the second period elements. Explain.
Methyl isocyanate, \(\mathrm{CH}_{3} \mathrm{NCO},\) is used to make certain pesticides. In December \(1984,\) water leaked into a tank containing this substance at a chemical plant to produce a toxic cloud that killed thousands of people in Bhopal, India. Draw Lewis structures for this compound, showing formal charges.
The formulas for the fluorides of the third-period elements are \(\mathrm{NaF}, \mathrm{MgF}_{2}, \mathrm{AlF}_{3}, \mathrm{SiF}_{4}, \mathrm{PF}_{5}, \mathrm{SF}_{6},\) and \(\mathrm{ClF}_{3}\). Classify these compounds as covalent or ionic.
What is Lewis's contribution to our understanding of the covalent bond?
Write Lewis structures for these four isoelectronic species: (a) CO, (b) \(\mathrm{NO}^{+},\) (c) \(\mathrm{CN}^{-},\) (d) \(\mathrm{N}_{2}\). Show formal charges.
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