Chapter 1.2, Problem 3P

For three simple molecules of your own choice, apply the rules for writing Lewis structures. Write your discussion as if you are explaining the method to someone who is not familiar with Lewis structures.

19) Select the pair of atoms which can form ionic bond between them.   a.   Ca and N   b.   O and N   c.   Ca and Mg   d.   Ca and K

Which pairs of elements are likely to form ionic bonds and which pairs are likely to form covalent bonds? a. carbon and hydrogenc. hydrogen and oxygen b. sodium and sulfurd. magnesium and bromine

7. What kind of bond is formed when two molecules share electrons to form a molecule? a. Covalent b. Ionic c. Polar ionic d. Metallic 8. Why are transition metals special cases? a. They have two valence shells with complete octets that want to react. b. They have up to 8 electrons in their valence shell. c. They don't react with other elements because they are actually noble gases. d. They have two valence shells with an incomplete octet that want to react. 9. Name the following compound, BrF; a. Bromine pentafluoride b. Bromine fluoride c. Bromine (IV) fluoride d. Monobromine pentafluoride 10. Avron was conducting his science fair project when he came across a bottle of acid whose label read, "HSCN." What is the name of the acid that is contained within the bottle? a. Hydrocyanic acid b. Hydrothiocyanic acid c. Thiocyanic acid d. This acid does not exist 11. What is the chemical formula for copper (II) hydroxide? а. Cu,(ОН) b. CUOH с. CuOН, d. Cu(OH),

Which of these bonds is predicted to be the strongest bond? a.) N-N b.) Si-Si c.) F-P d.) F-Si

* Question Completion Status: O QUESTION 4 In Lewis structures central atom(s) is/are atom(s) a. that can form the most number of bonds Ob. that can form the least number of bonds O c. aoms that is closer to Group 8A QUESTION 5 In drawing Lewis structures what does octet rule mean? a. Atoms are the most stable if they have 8 valence electrons O b. atoms are stable if they have 8 p electrons Oc. atoms lose electrons until they have only 8 electrons left QUESTION 6 Select the correct structure(s) Click Save and Submit to save and submit. Click Save All Answers to save all answers. 6 M B 16 Save All Answers

15. Which of these elements never undergo(es) covalent bonding? A. argon B. barium C. bromine D. carbon E. calcium

TTTTTTTTTTT Atoms of oxygen can form many different types of covalent chemical bonds. Which 19 covalent bond can atoms of oxygen form? A. Single bonds only B. Single bonds & Double bonds C. Single bonds, Double bonds, & Triple bonds D. None of the options listed. Which element's atoms can only form one single bond and no others in a covalent 20 compound? A. Hydrogen B. Helium C. Lithium D. Beryllium Which element's atoms can only form one single bond and no others in a covalent 21 compound? A. Selenium B. Arsenic C. Aluminum D. Bromine Consider the covalent compound H₂O. 22 How many total valence electrons are in one molecule? A. 2 C. 8 B. 6 D. 10 Consider the covalent compound H₂O. 23 How many unshared pairs of electrons are in one molecule? C. 3 pairs A. 1 pair B. 2 pairs D. 4 pairs Consider the covalent compound NF3. 24 How many total valence electrons are in one molecule? A. 22 B. 26 C. 28 D. 32 Consider the covalent compound NF3. 25 How many unshared pairs of electrons are in one…

3. Which of the following statements is true about the molecule shown below? O A. The bonds are polar and the molecule is polar. O B. The bonds are polar and the molecule is nonpolar. O C. The bonds are nonpolar and the molecule is polar. D. The bonds are nonpolar and the molecule is nonpolar.