Podcast
Questions and Answers
What is the shape of the molecule with two atoms bonded to the central atom and one lone pair of electrons around this central atom?
What is the shape of the molecule with two atoms bonded to the central atom and one lone pair of electrons around this central atom?
- Trigonal planar
- Linear
- Trigonal pyramidal
- Bent (correct)
What is the molecular shape of HCN?
What is the molecular shape of HCN?
- Bent
- Angular
- Trigonal pyramidal
- Linear (correct)
These hybrid orbitals were most likely formed by mixing which orbitals?
These hybrid orbitals were most likely formed by mixing which orbitals?
- Two s orbitals and two p orbitals
- One s orbital and two p orbitals
- One s orbital and three p orbitals
- One s orbital and one p orbital (correct)
Which is most likely an example of an angular molecule?
Which is most likely an example of an angular molecule?
By examining electron domain geometry, one can determine that the ammonia molecule (NH3) has how many sp3 orbitals?
By examining electron domain geometry, one can determine that the ammonia molecule (NH3) has how many sp3 orbitals?
If the shape of a molecule is tetrahedral, how many lone pairs are most likely on the central atom?
If the shape of a molecule is tetrahedral, how many lone pairs are most likely on the central atom?
If the shape of a molecule is trigonal planar, how many electron domains around the central atom does this molecule most likely have?
If the shape of a molecule is trigonal planar, how many electron domains around the central atom does this molecule most likely have?
Which type of hybridization leads to a bent molecular geometry and a tetrahedral electron domain geometry?
Which type of hybridization leads to a bent molecular geometry and a tetrahedral electron domain geometry?
Two molecules have the same molecular geometry but different electron domain geometries. Which combination could describe these molecules?
Two molecules have the same molecular geometry but different electron domain geometries. Which combination could describe these molecules?
Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape?
Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape?
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Study Notes
Molecular Shapes and Hybridization
- A molecule with two bonded atoms and one lone pair has a bent shape.
- HCN exhibits a linear molecular shape.
- Hybrid orbitals formed from one s orbital and one p orbital indicate the mixing of orbitals in the molecule.
- H2O is an example of an angular molecule.
Electron Domain Geometry
- NH3 consists of four sp3 orbitals, allowing analysis through electron domain geometry.
- A tetrahedral molecular shape typically has zero lone pairs on the central atom.
- A trigonal planar shape indicates three electron domains around the central atom.
Hybridization Types
- sp3 hybridization results in bent molecular geometry with a tetrahedral electron domain geometry.
Distinguishing Molecular Geometries
- Molecules can share the same molecular geometry while differing in electron domain geometries, as seen in configurations with 2 atoms and 2 lone pairs versus 2 atoms and 1 lone pair.
- Both trigonal planar and trigonal pyramidal shapes contain three atoms around the central atom but differ in the presence of lone pairs.
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