Chapter 1.12, Problem 35P

Based on Pauling's electronegativity scale and the Periodic trends within them, which of the following bonds would you expect to be MOST polar?   A. C-N   B. C-C   C. C-O   D. C-H   E. O-H

10. Which of the following elements is the most electronegative? c. Chlorine a. Carbon b. Vanadium e. Охуgen d. Sodium

Which combination of atoms will form a covalent bond with the greatest polarity?   A. H and C   B. H and F   C. Na and Cl   D. H and N   E. H and O   F. H and H

16. Among N-H, H-H, O-H, C-H. is the least polar bond, and is the most polar bond. A. H-H and 0-H B. N-H and H-H C. H-H and C-H D. 0-H and H-H

Which of the following best describes electronegativity trends in the periodic table? I. Electronegativity inreases from right to left across a period. II. Electronegativity inreases from left to right across a period. III. Electronegativity inreases from bottom to top within a group. IV. Electronegativity inreases from top to bottom within a group. Select one: O a. I and IlI b. I and IV c. Il and III d. Il and IV e. None of these.

Which bond has the smallest partial positive charge on hydrogen (least polar) A. HF B. HCI C. HBr D. HI

9. Use table of electronegativities to determine the bond formed between Sulfur & Fluorine a. ionic b. polar covalent c. nonpolar covalent d. none of these 10. Use table of electronegativities to determine the bond formed b/w Potassium & Chloride a. ionic b. polar covalent c. nonpolar covalent d. none of these 11. Use table of electronegativities to determine the bond formed b/w Nitrogen & Silicon a. ionic b. polar covalent c. nonpolar covalent d. none of these 12. Use table of electronegativities to determine the bond formed b/w Hydrogen & Sulfur a. ionic b. polar covalent c. nonpolar covalent d. none of these 13. Use table of electronegativities to determine the bond formed b/w Oxygen & Phosphorus a. ionic b. polar covalent c. nonpolar covalent d. none of these 14. What does it mean if a molecule has a polar covalent bond? a. one atom of the molecule is more electronegative that the other b. each atom of the molecule has the same electronegativity the molecule basa double bond &

Which of the following has the most polar indicated bond (Electronegativites are not necesasry to answer this question)?       a. Si-H       b. P-H       c. S-H       d. Cl-H

3. Using the periodic table, which element in each pair is more electronegative? a. Si, O b. N, C c. CI, Br d. S, P