A1 - shapes of molecules
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Total number of electrons: 2 Number of bonding pairs: 2 Number of lone pairs: 0
Linear 180 degrees
Total number of electrons: 3 Number of bonding pairs: 3 Number of lone pairs: 0
Trigonal planar 120 degrees
Total number of electrons: 3 Number of bonding pairs: 2 Number of lone pairs: 1
Bent (V-shaped) 118 degrees
Total number of electrons: 4 Number of bonding pairs: 4 Number of lone pairs: 0
Tetrahedral 109.5 degrees
Total number of electrons: 4 Number of bonding pairs: 3 Number of lone pairs: 1
Trigonal pyramidal 107 degrees
Total number of electrons: 4 Number of bonding pairs: 2 Number of lone pairs: 2
Bent (V-shaped) - tetrahedral without top and side) 104.5
Total number of electrons: 5 Number of bonding pairs: 5 Number of lone pairs: 0
Trigonal bipyramidal 120 degrees 90 degrees
Total number of electrons: 5 Number of bonding pairs: 4 Number of lone pairs: 1
Trigonal bipyramidal or see-saw - trigonal bipyramidal without top or without side 119 degrees 89 degrees
Total number of electrons: 5 Number of bonding pairs: 3 Number of lone pairs: 2
Trigonal planar or T-shape - trigonal bipyramidal without top and bottom or without in and out
Total number of electrons: 6 Number of bonding pairs: 6 Number of lone pairs: 0
Octahedral 90 degrees
Total number of electrons: 6 Number of bonding pairs: 5 Number of lone pairs: 1
Square pyramid - octahedral without the bottom 89 degrees
Total number of electrons: 6 Number of bonding pairs: 4 Number of lone pairs: 2
Square planar - octahedral without top and bottom 90 degrees
What is the size of the angles in CH4?
109.5 degrees
What is the size of the angles in NH3?
107 degrees
What is the size of the angles in H2O?
104.5 degrees