2. What type of chemical bonding is present in the following compound? CH3CH2CH2CH2Br| O a. A O b. B O C. C O d. D A) Polar covalent B) Hydrogen C) Ionic D) polar covalent and non-polar covalent

Why is the geometric structure of a molecule important, especially for biological molecules?

Write Lewis structures for: (a) PO43 (b) ICl4 (c) SO32 (d) HONO

The molecular ion S3N3 has the cyclic structure All SN bonds are equivalent. (a) Give six equivalent resonance hybrid Lewis diagrams for this molecular ion. (b) Compute the formal charges on all atoms in the molecular ion in each of the six Lewis diagrams. (c) Determine the charge on each atom in the polyatomic ion, assuming that the true distribution of electrons is the average of the six Lewis diagrams arrived at in parts (a) and (b). (d) An advanced calculation suggests that the actual charge resident on each N atom is 0.375 and on each S atom is +0.041 . Show that this result is consistent with the overall +1 charge on the molecular ion.

G. N. Lewis developed a model for chemical bonding that you have learned in this chapter. His theory was extremely successful and is used today at all levels of chemistry, from the introductory class to the research laboratory. Why was Lewis theory so successful?

Which one of the following bonds is polar? a. a bond between two identical atoms b. a bond between two atoms with the same electronegativity c. a bond between two atoms with different electronegativities

6. CO2 a. Lewis structure e. aloq hud c. Electronic geometry_ d. Molecular shape_ Bond angle? b. Draw the different bonds and label their polarity.

8. SO3 a. Lewis structure c. Electronic geometry_ d. Molecular shape. e. Bond angle? b. Draw the different bonds and label their polarity. Lyzemoag bihomosi narkishpalom.

11. Choose the compound below that contains at least one polar covalent bond but is nonpolar. A. HCN  B. CF4   C. SeBr4   D. ICl3   E. Both B and C

7. HCN a. Lewis structure og arb c. Electronic geometry_ d. Molecular shape e. Bond angle? b. Draw the different bonds and label their polarity. DID viisumla tes