Structures on their own, these substances can be used as a starting point for Go deeper into formal charges, or if your students come across these alternative (Those structures and further information onįormal charges are also included at the end of the answer key.) If you wish to Of them violate the octet rule in order to minimize formal charges. A possible extensionĬould be to add more complicated molecules that extend past the octet rule.ĭrawn to satisfy the octet rule, experimental data shows that in reality some Lewis structures can be drawn to satisfy the octet rule. This investigation includes only compounds whose.Linear (two atoms and no unbonded electrons around one central atom).Bent (two atoms and two pairs of unbonded electrons around one central atom).Trigonal planar (three atoms and no unbonded electrons around one central atom).Trigonal pyramidal (three atoms, one unbonded pair of electrons around one central atom).Tetrahedral (four atoms around one central atom).It’s helpful to have samples of each geometry at the front of the class so students can familiarize themselves with how to assemble molecular models.No safety considerations need to be observed for this investigation. Lesson: 45 minutes (can be completed for homework) Materials This lesson supports students’ understanding of Lewis structures and apply VSEPR theory to them to identify the molecular This activity will help prepare your students to meet the following scientific and engineering practices:īy the end of this lesson, students should be able to There is a lot of repetition so students gain a lot of practice. They will draw Lewis structures, use molecular models, and determine the geometry of covalent compounds. In this activity, students will investigate the VSEPR geometry of covalent compounds.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |