Question
By promoting a valence electron to a higher azimuthal quantum number, the sulfur atom in sulfur tetrafluoride unexpectedly adopts this hybridization. For 10 points each:
[10h] Name this orbital hybridization that’s also adopted by the phosphorus atom in phosphorus pentachloride.
ANSWER: sp3d (“s p three d”) [or sp3d1; reject “sp3” or “sp3d2”]
[10m] Phosphorus and sulfur can form hybrid orbitals with 3d character even though their valence electrons occupy this lower-energy subshell. Your answer should include a number and a letter.
ANSWER: 3p subshell [accept p3; prompt on 3 or p alone]
[10e] Sulfur’s hypervalency in SF4 (“S F four”) is indicated by a lone pair and four bonding pairs on one of these “dot” diagrams named for the American chemist who formalized valence bond theory.
ANSWER: Lewis diagram [or Lewis structure; or Lewis dot diagram; accept Gilbert Newton (G.N.) Lewis]
<Adam Silverman, Science - Chemistry> ~20791~ <Editor: Adam Silverman>
Summary
| 2023 PACE NSC | 06/10/2023 | Y | 4 | 17.50 | 100% | 25% | 50% |
Data
| Dunbar | Winston Churchill B | 0 | 0 | 10 | 10 |
| Mira Loma | Heights | 10 | 10 | 10 | 30 |
| Carl Sandburg | Maggie Walker C | 0 | 0 | 10 | 10 |
| Thomas Jefferson D | Mercer County | 10 | 0 | 10 | 20 |