PC3 Flashcards
Linear
Bond angle:
Bonding pairs:
180
2 bonding pairs of electrons
Trigonal planar
Bond angle:
Bonding pairs:
120
3 bonding pairs of electrons
Tetrahedral
Bond angle:
Bonding pairs:
109.5
4 bonding pairs of electrons
Trigonal pyramidal
Bond angle:
Bonding pairs
107
3 bonding pairs of electrons
1 lone pair of electrons
Bent
Bond angle:
Bonding pairs:
104.5
2 bonding pairs of electrons
2 lone pairs of electrons
Trigonal bipyramidal
Bond angle:
Bonding pairs:
120
90
5 bonding pairs of electrons
2 lone pairs of electrons
Seesaw
Bond angle:
Bonding pairs:
102
86.5
4 bonding pairs of electrons
2 lone pairs of electrons
T-shape
Bond angle:
Bonding pairs:
87.5
3 bonding pairs of electrons
2 lone pairs of electrons
Octahedral
Bond angle:
Bonding pairs:
90
6 bonding pairs of electrons
Square pyramidal
Bond angle:
Bonding pairs:
90
5 bonding pairs of electrons
1 lone pair of electrons
Square planar
Bond angle:
Bonding pairs:
90
4 bonding pairs of electrons
2 lone pairs of electrons
What are the 2 awkward molecules and what are their structures:
Carbon dioxide = linear
Sulfur dioxide = bent
Ionic bonding
Melting/ boiling point:
Typical state under standard conditions:
Does it conduct electricity?:
Is it soluble in water?:
High (giant ionic lattices held together by strong electrostatic forces which take a lot of energy to overcome)
Solid
Only when molten/dissolved (ions are free to move)
Yes (polar water molecules pull the ions away from the lattice and cause it to dissolve)
Simple covalent (molecular) bonding
Melting/ boiling point:
Typical state under standard conditions:
Does it conduct electricity?:
Is it soluble in water?:
Low (weak intermolecular forces)
Liquid/gas/solid
No
Depends on how polar the molecules are
Giant covalent bonding
Melting/ boiling point:
Typical state under standard conditions:
Does it conduct electricity?:
Is it soluble in water?:
High
Solid
No (except graphite)
No
