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H-Cl
-7
CH3CO2-H
4.8 (4.76)
NH4+ (ammonium)
9.27
HO-H
15.7 (14)
CH3CH2O-H
16
HC≡CH (≡—H)
25
H-H
35
H2N-H
38
CH2=CH2
44
H3C-H
50
number of pi electrons formula
2 x (# of pi bonds + # of delocalized lone pairs)
Degree of Unsaturation formula (DoU)
2C + 2 - H + N - X / 2
What are the 3 rules to find significant resonance?
Greatest filled octet
Least amount of formal charges
A structure w a negative charge on the more EN element is more important
Alkene
Alkyne
Aromatic compound/ring
Alkyl Halide
Alcohol
Ether
Amine
thiol
Sulfide
Aldehyde
Ketone
Carboxylic Acid
Ester
amide
Acid Chloride
2 rules to determine which compound is more acidic?
E.N for same row
SIZE for same column