AP CHEM UNIT 1+2: Atomic/Compound Structure and Properties
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18 Terms
Coulomb’s Law
Larger value = small distance and high charge magnitude
Photoelectron spectroscopy
Outer e- have greater energy so less energy is used to remove them
Atomic Radius
More protons increases magnitude of charge —> more Columbia attraction —> more protons attract e- —> smaller atomic radius
Greater Ionization energy
More protons to attract e- —> greater coulumbic attraction —> more energy to remove e-
Atomic radius
Fewer e- shell —> smaller
Electronegativity
e- ability to attract shared e- in bond
Bond energy/enthalpy
Always positive
Weakest bond energy
single bond
Atomic radius effect on bond length
shorter = smaller atomic radii
Melting point increases when…
Magnitude increases and ions are small
How to find formal charge
Total charge = VE - (dots+lines)
Trigonal Bipyramidal
5 σ and 1 LP
Seesaw
4 σ and 1 LP
T-shaped
3 σ + 2 LP
Octahedral
6 σ + 0 LP
Square Pyramidal
5 σ + 1 LP
Square Planar
4 σ + 2 LP
Find hybridization
σ + LP
