Polar and Nonpolar Molecules
Suppose a molecules contained four identical bonds around the center atom, and all four of those bonds were polar. What would the angle between any of the four bonds need to be for the molecule to be considered nonpolar? (Assume there are no lone pairs on the center atom)
109.5 degrees (tetrahedral arrangement) or 90 degrees (square planar arrangement)
Suppose a molecule contained two bonds around the center atom, and both those bonds were polar. What would the angle between those two bonds need to be for the molecule to be considered nonpolar? (assume there are no lone pairs on the center atom)
180 degrees
Molecular geometry for 2 bonding pairs and 1 lone pair
Bent
180 degrees
Linear
Electron geometry for 2 total electron pairs
Linear
Molecular geometry for 2 bonding pairs and 3 lone pairs
Linear
If a molecule contains only one polar bond and no lone pairs, is there an arrangement that will make the molecule nonpolar?
No, it is already polar
Which contains molecules that are symmetric about multiple planes of symmetry? Nonpolar or polar molecules
Nonpolar molecules
90 degrees
Octahedral
Electron geometry for 6 total electron pairs
Octahedral
When lone pairs of electrons are present in a nonpolar molecule, how are they arranged around the center atom -- on the same side of the molecule or on opposite sides of the molecule?
Opposite sides
When polar bonds are present in a nonpolar molecule, how are they arranged around the center atom -- on the same side of the molecule or on opposite sides of the molecule?
Opposite sides
Molecular geometry for 4 bonding pairs and 2 lone pairs
Square planar
Molecular geometry for 3 bonding pairs and 2 lone pairs
T-shaped
109.5 degrees
Tetrahedral
Electron geometry for 4 total electron pairs
Tetrahedral
Electron geometry for 5 total electron pairs
Trigonal Bypyramidal
120 degrees
Trigonal Planar
120 and 90 degrees
Trigonal bi-pyramidal
Electron geometry for 3 total electron pairs
Trigonal planar
107.5 degrees
Trigonal pyramidal
104.5 degrees
bent
Molecular geometry for 2 bonding pairs and 2 lone pairs
bent
Carbon tetrafluoride (CH4) Polar or nonpolar?
nonpolar
Phosphorous pentachloride (PCl5) Polar or nonpolar?
nonpolar
Polar or nonpolar? CH4
nonpolar
Polar or nonpolar? CO2
nonpolar
Polar or nonpolar? XeF4
nonpolar
Hydrogen sulfide (H2S) Polar or nonpolar?
polar
Polar or nonpolar? CH2Cl2
polar
Polar or nonpolar? CH2O
polar
Polar or nonpolar? NH3
polar
Sulfur dioxide (SO2) Polar or nonpolar?
polar
Water (H2O) Polar or nonpolar?
polar
When lone pairs of electrons are present in a polar molecule, how are they arranged around the center atom -- on the same side of the molecule or on opposite sides of the molecule?
same sides
When polar bonds are present in a polar molecule, how are they arranged around the center atom -- on the same side of the molecule or on opposite sides of the molecule?
same sides
Molecular geometry for 4 bonding pairs and 1 lone pair
seesaw
Molecular geometry for 5 bonding pairs and 1 lone pair
square pyramid
Molecular geometry for 3 bonding pairs and 1 lone pair
trigonal pyramidal
