Chemistry
Profile Activity
Meta user
Network profile
24,310
reputation
1
42
67

porphyrin

I'm a semi-retired physical chemist.

690
answers
0
questions
~2.0m
people reached
  • Member for 4 years, 10 months
  • 3,478 profile views
  • Last seen 13 mins ago

Communities (6)

Top network posts

Top tags (184)

Score 605
Posts 204
Posts % 30
Score 283
Posts 96
Score 245
Posts 68
Score 229
Posts 77
Score 222
Posts 64
Score 147
Posts 45
View all tags →

Top posts (690)

All Questions Answers
Votes Newest
28 Understanding group theory easily and quickly Sep 7 '16
18 Why does bond angle decrease in the order H2O, H2S, H2Se? Aug 25 '16
18 Is it possible for a substance to absorb a longer wavelength of EM wave and emit a shorter wavelength? Jul 7 '17
15 What is resonance, and are resonance structures real? Jul 31 '16
13 Is there any empirical upper limit for order of reaction? Jul 19 '17
13 Uv vis and fluorescence spectroscopy: sensitivity Nov 21 '17
13 Can magnetic fields affect a chemical reaction? Jul 23 '16
12 Why is the magnesium(II) ion preferred over other ions in chlorophyll? Feb 3 '17
12 Why do spin isomers of hydrogen (ortho and para hydrogen) change their nuclear spin with temperature variance? Jan 29 '17
12 Won't the net effect of a catalyst be zero if it creates a new path with lower activation energy? Sep 11 '16
View all questions and answers →

Badges (110)

Gold

1

Rarest

Silver

42

Rarest

Bronze

67

Rarest

View all badges →

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.