Chapter 1.4: Bond Angles and Shape of Molecules
No description yet. This curated deck is ready for daily study.
Card preview (19)
How many regions of electron density are around the central atom in a structure that has a predicted bond angle of 120°?
3
What is a method for predicting bond angles based on the idea that electron pairs repel each other and keep as far apart as possible?
• Valence-Shell Electron-Pair Repulsion
What is the predicted bond angle of a structure that has 3 regions of electron density around central atom?
120°
How many regions of electron density are around the central atom in a structure that has a linear arrangement?
2
Define tetrahedral
a bonding arrangement in which an atom is bonded to four atoms located at the corners of a tetrahedron
What is the predicted distribution of electron density of a structure that has 2 regions of electron density around central atom?
linear
How many regions of electron density are around the central atom in a structure that has a predicted bond angle of 109.5°?
4
What is the predicted distribution of electron density of a structure that has 4 regions of electron density around central atom?
tetrahedral
Define pyramidal
a bonding arrangement in which an atom is bonded to three atoms in a triangular pyramid
What is a bonding arrangement in which an atom is bonded to four atoms located at the corners of a tetrahedron ?
tetrahedral
Define • Valence-Shell Electron-Pair Repulsion
a method for predicting bond angles based on the idea that electron pairs repel each other and keep as far apart as possible
What is the predicted bond angle of a structure that has 2 regions of electron density around central atom?
180°
How many regions of electron density are around the central atom in a structure that has a tetrahedral arrangement?
4
What is the predicted bond angle of a structure that has 4 regions of electron density around central atom?
109.5°
• According to VSEPR, a double bond is treated as a …
single region of electron density
How many regions of electron density are around the central atom in a structure that has a trigonal planar arrangement?
3
What is the predicted distribution of electron density of a structure that has 3 regions of electron density around central atom?
trigonal planar
What is a bonding arrangement in which an atom is bonded to three atoms in a triangular pyramid?
pyramidal
How many regions of electron density are around the central atom in a structure that has a predicted bond angle of 180°?
2