CHM 7-9
Bond Order Equation
((number of electrons in bonding orbitals)-(number of electrongs in antibonding orbitals))/2
What defines a paramagnetic molecule?
unbonded electron
What makes a diamagnetic molecule?
When all electron pairs are filled
What is the order for writing out ground state electron pairs
s are all sigma, p and d all start with a sigma the rest are pi
Linear hybrid
sp
Trigonal planar Hybrid
sp2
Tetrahedral Hybrid
sp3
Trigonal bypyramidal Hybrid
sp3d
Octahedral
sp3d2
Equation for Steric Number
(number of atoms bonded to central atom) + (number of lone pairs on central atom)
Steric Number 2
Linear
Steric Number 3
Trigonal Planar, Bent
Steric Number 4
Tetrahedral, Trigonal Pyramidal, Bent
Steric Number 5
Trigonal Bipyramidal, See-saw, T-shape, Linear
Steric Number 6
Octahedral, Square Pyramidal, Square Planar
AX2
Steric Number 2
AX3, AX2E
Steric Number 3
AX4, AX3E, AX2E2
Steric Number 4
AX5, AX4E, AX3E2, AX2E3
Steric Number 5
AX6, AX5E, AX4E2
Steric Number 6
180 degrees
Linear
109.5 degrees
Trigonal Planar
90/120 degrees
Trigonal Bipyramidal
90/90
Octahedral
Formal Charge
(Valence e-) - (Number of unbonded e-) - (1/2 bonded e-)