Unit 2 Part 1 Exam Review
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42 Terms
EN of H
2.1
EN of Li
1.0
EN of Be
1.5
EN of B
2.0
EN of C
2.5
EN of N
3.0
EN of O
3.5
EN of F
4.0
Highest lattice energy
Most charge with smallest size
Lowest lattice energy
least amount of charge in largest size
As you go down the periodic table the size of an atom
increases
Charge for Column 1
+1
Charge for Column 2
+2
Charge for Column 3
+3
Charge for Column 5
-3
Charge for Column 6
-2
Charge for Column 7
-1
- charge means you are _____ electrons
losing
- charge means you are _____ electrons
gaining
Unless it's an ion, the formal charge should equal
0
formal charge formula = Number of valence electrons - # bonds -
number of lone electrons
NO3- NO2-, O3, CO3-, C6H6
FAMOUS examples of resonance structures
BH3 & BeCl2
FAMOUS examples of hypovalent
SF6, XeF4, and I3-
FAMOUS examples of hypervalent
2 electron rich areas
180 degrees, linear
3 electron rich areas
120 degrees, trigonal planar
4 electron rich areas
109.5 degrees, tetrahedral
5 electron rich areas
180, 120, 90 degrees, trigonal bypyramidal
6 electron rich areas
1280, 90 degrees, octahedral
AB2 & AB2U3
linear
AB3
trigonal planar
AB2U & AB2U2
angular or bent
AB4
tetrahedral
AB3U
trigonal pyramidal
AB5
trigonal bipyramidal
AB4U
seesaw
AB3U2
T-shaped
AB6
octahedral
AB5U
square pyramidal
AB4U2
square planar
CH4
non-polar
CH3F
polar