QQuestionChemistry
QuestionChemistry
What is the 3D structure (Molecular Geometry & Shape) and Geometry Name (e.g., Trigonal Planar) of I^−3 (triiodide ion)?
6 months agoReport content
Answer
Full Solution Locked
Sign in to view the complete step-by-step solution and unlock all study resources.
Step 1
Determine the number of electron groups around the central atom (Iodine). In I^−3, there are 7 electrons from Iodine and 3 negative charges, which means 3 more electrons. In total, there are 7 + 3 = 10 electrons around Iodine. Since Iodine needs 8 electrons to achieve a stable electron configuration, it will use all 10 electrons for forming electron groups.
Step 2
Distribute the electron groups around the central atom. Iodine has 5 energy levels, so it will form 1 lone pair and 3 bonding pairs with the other Iodine atoms.
Final Answer
The molecular geometry of I^−3 (triiodide ion) is a see-saw shape, and the 3D shape or spatial arrangement is also a see-saw. The geometry name is "See-saw."
Need Help with Homework?
Stuck on a difficult problem? We've got you covered:
- Post your question or upload an image
- Get instant step-by-step solutions
- Learn from our AI and community of students