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17 Cards in this Set

  • Front
  • Back
What is the rule for Zeff (nuclear charge)?
Zeff increases going across and decreases going down.
What is the rule for atomic radii?
Atomic Radii increases going down a group BUT decreases going across a row.
What is the rule of ionic radii?
Cations are smaller than the netural atom


Anions are LARGER than the neutral atom.
What is the rule for ionization energies?
Ionization energies decrease going down and increase going across.
What is the rule for electron affinity?
Electron affinity decreases going down and increases going across.
What is the rule for lattice energies?
Energy released is negative lattice energy and energy absorbed is positive lattice energy.
What is the formula for Formal Charge?
FC = Valence Electrons - unshared electrons -# of bonds.
Define resonance structure:
Ways to draw bonds from elements.
Define Coordination #:
CN tells us how many bonds are connected to the central atom.
Tips for molecular structures:
(lone pairs and bonds)
unpaired electrons count as a charge cloud (:)
Double Bonds are stronger and shorter than single bonds.
Define hybrid orbital:
The mixing of orbitals together.
Define Valence Bond Model:
The overlapping of orbitals in a covalent bond.
What are pi bonds?
Pi bonds occur in molecules with double or triple bonds that overlap the two p orbitals.
A double bond is a _______.

A single bond is a _______.
A double bond is a sigma bond and a pi bond.

A triple bond is one sigma bond and two pi bonds.
what is a sigma bond?
a sigma bond has orbital overlap directly between the two elements in the center.
what is paramagnetic?
paramagnetic is when electrons unpaired are drawn into an magnetic field.
what is diamagnetic?
Diamagnetic is when there are ZERO unpaired electrons.