Chapter 6 - Shapes of Molecules and Intermolecular Forces Flashcards
Shapes of molecules and ions, Electronegativity and polarity, Intermolecular forces and Hydrogen bonding.
What does molecular shape depend on?
Electron pairs around the central atom.
And lone pairs
In what way do electron pairs interact?
They repel each other.
Which type of pair repels the most?
Lone pairs
What is the order of pair repulsion, from strongest to weakest?
Lone pair/lone pair
Lone pair/bonding pair
Bonding pair/bonding pair
What is the name of the way to predict a molecule’s shape?
Electron pair repulsion theory
What shape name is given to a molecule with no lone pairs but four bonded pais?
Tetrahedral
What is the bond angle in a tetrahedral molecule?
109.5
whats the shapes table?
what do dotted wedge, solid wedges and filled wedges stand for?
What shape name is given to a molecule with one lone pair?
pyramidal
What is the bond angle in a pyramidal molecule?
107
What shape name is given to a molecule with two lone pairs?
Non-linear
What is the bond angle in a non-linear molecule?
104.5
What shape name is given to a molecule with 2 electron/bonded pairs around the central atom?
Linear
What is the bond angle in a linear molecule?
180
What shape name is given to a molecule with 3 electron pairs and no lone pairs around the central atom?
Trigonal planar
What is the bond angle in a trigonal planar molecule?
120
What shape name is given to a molecule with 5 electron pairs around the central atom?
Trigonal bipyramidal