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| The molecular shape that has a 109 degree bond angle is which of the following? a. tetrahedral b. pyramidal c. bent d. linear or e. none of the above? | tetrahedral |
| Which of the following consists of a bond equally sharing electrons? a. ionic bond b. polar covalent c. purely covalent d. polyatomic ion or e. none of the above | purely covalent |
| The only electrons involved in determining the three-dimensional shape of a molecule are a. the covalent bonds on the central atom. b. the lone pair valence electrons on the central atom. c. both a and b. d. neither a and b. | both a and b: the covalent bonds on the central atom and the lone pair valence electrons on the central atom. |
| If a substance will not dissolve in water, then which of the following should be chosen to dissolve that substance? a. any polar substance b. vegetable oil c. any ionic substance d. none of the above will work | b. vegetable oil |
| The SiO 2 has which of the following molecular shapes? a. tetrahedral b. pyramidal c. bent d. linear e. none of the above | d. linear |
| The molecular shape that has a 90 degree bond angle is which of the following? a. tetrahedral b. pyramidal c. bent d. linear e. none of the above | e. none of the above |
| The chemical formula for aluminum sulfate is which of the following? a. Al 3 (SO 4 )2 b. Al 2 S 3 c. Al 2 (SO 3)4 d. Al 2 (SO 4)3 e. none of the above | Al 2 (SO 4)3 |
| The PCl 3 has which of the following molecular shapes? a. tetrahedral b. pyramidal c. bent d. linear e. none of the above | b. pyramidal |
| If a molecule is to be polar covalent, it must have which of the following? a. the molecule must have polar bonds in it. b. the polar bonds must be of equal strength c. both a and b d. neither a and b | a. the molecule must have polar bonds in it |
| Which of the following molecular shapes has a 105 degree bond angle? a. tetrahedral b. pyramidal c. bent d. linear e none of the above | c. bent |
