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48 votes
5 answers
82k views

Why does bond angle decrease in the order H2O, H2S, H2Se?

11 votes
2 answers
60k views

why are lp-lp repulsions greater than bp-lp and bp-bp?

3 votes
1 answer
1k views

Does ionization energy have anything to do with how reactive an element is?

  • 2,179
22 votes
3 answers
6k views

Why are atoms with eight electrons in the outer shell extremely stable?

6 votes
2 answers
5k views

Heating of Ethers with HI and Cleavage of Ethers

35 votes
1 answer
34k views

Is the ammonium substituent (-NH3+) really meta-directing in electrophilic substitution?

  • 641
17 votes
1 answer
15k views

What is the mechanism of the Clemmensen reduction?

  • 1,157
21 votes
2 answers
29k views

Clemmensen reduction vs. Wolff-Kishner reduction

15 votes
1 answer
34k views

Reaction mechanism for reduction of nitrobenzene to aniline in catalytic and acidic media

  • 481
10 votes
2 answers
11k views

Does Friedel-Crafts reaction fail with benzoic acid?

  • 602
1 vote
1 answer
38k views

Halogenation of Phenol [closed]

12 votes
1 answer
5k views

Electrophilic substitution on disubstituted benzene rings

22 votes
3 answers
44k views

What is the origin of the differences between the MO schemes of O₂ and N₂?

  • 14k
12 votes
2 answers
27k views

Why is the lone pair of pyridine's nitrogen atom not part of the aromatic ring?

  • 3,158
14 votes
4 answers
11k views

Why can't alcohols form hydrogen-bonded dimers like carboxylic acids?

  • 459
1 vote
1 answer
17k views

sp² hybridized orbital

  • 1,023
5 votes
2 answers
6k views

Do lone pairs contribute towards the pi electron count of heterocycles?

25 votes
1 answer
20k views

Is cyclobutadiene antiaromatic?

  • 17.8k
17 votes
1 answer
12k views

Is cyclopentadiene or cycloheptatriene more acidic?

  • 9,446
2 votes
1 answer
2k views

acid-catalyzed ring opening of epoxide

  • 651
5 votes
3 answers
463 views

Synthesing tetrahydropyran from ethylene oxide

  • 169
11 votes
4 answers
743 views

Most favorable position of attack of an electrophile on 4-trifluoromethyl-1,2-diphenylbenzene

3 votes
2 answers
571 views

Recognising a rate-determining step in E1

  • 497
2 votes
0 answers
117 views

Hyperconjugation and inductive effect on carbocations [duplicate]

  • 147
2 votes
1 answer
151 views

Why is methyl parathion less toxic than ethyl parathion?

  • 1,105
0 votes
0 answers
55 views

Substitution reactions haloalkanes confusion

  • 229
0 votes
2 answers
160 views

Hydride shift and Ring Expansion

  • 135
0 votes
1 answer
704 views

Formation of Acetal from Hemiacetal?

4 votes
2 answers
6k views

Ranking order of nucleophilicity

20 votes
1 answer
3k views

Why is proton transfer so fast?

  • 17.8k