User Nicolau Saker Neto

13

votes

1

answer

1k

views

What exact color does ozone gas have?

inorganic-chemistry color

Mar 22 '19 at 23:00 MackTuesday 337

13

votes

3

answers

11k

views

Hybridization of nitrogen in trisilylamine, (SiH3)3N?

inorganic-chemistry hybridization

May 8 at 12:47 Community♦ 1

13

votes

1

answer

3k

views

Living-cationic vs cationic polymerization

polymers

Feb 29 '16 at 5:46 Community♦ 1

13

votes

2

answers

1k

views

What is the purpose of calculating other orbitals than HOMO and LUMO?

computational-chemistry orbitals

Nov 1 '17 at 9:15 TAR86 6,447

13

votes

2

answers

5k

views

Why does the equilibrium constant change on scaling the stoichiometric coefficients of a reaction?

physical-chemistry equilibrium

Sep 1 '14 at 19:37 Community♦ 1

13

votes

1

answer

3k

views

How are turbostratic graphite phases formed?

solid-state-chemistry carbon-allotropes

Jan 1 '15 at 18:33 M.A.R. 9,500

13

votes

3

answers

21k

views

Why the salts in a salt bridge?

electrochemistry ions

Jun 11 '15 at 6:22 Community♦ 1

13

votes

2

answers

9k

views

Why does a hydride like NaH act as a base, but a hydride like NaBH4 act as a nucleophile?

organic-chemistry

Mar 4 '18 at 2:57 Gaurang Tandon 7,704

13

votes

1

answer

488

views

Radiation in space and its effects on chemical reactions?

theoretical-chemistry electromagnetic-radiation

Dec 31 '15 at 14:51 MaxW 19.7k

12

votes

1

answer

3k

views

Why six C atoms are usually seen in cyclic compounds?

organic-chemistry molecules atoms energy stereochemistry

Jun 14 '15 at 21:46 ron 76.8k

12

votes

2

answers

62k

views

Nitrobenzene reduction with (tin) Sn catalyst: Why is C-H bond cleavage preferred over O-H bond cleavage?

organic-chemistry reaction-mechanism nitro-compounds organic-reduction

May 11 '18 at 1:06 Gaurang Tandon 7,704

12

votes

1

answer

5k

views

Diatomic halogens - bond strength

bond molecular-orbital-theory

Jun 16 '19 at 23:02 Mathew Mahindaratne 23.4k

12

votes

3

answers

4k

views

Why are these molecular orbitals invalid for hexatriene?

physical-chemistry quantum-chemistry molecular-orbital-theory

Feb 13 '16 at 14:24 Blaise 1,481

12

votes

2

answers

1k

views

Why are there drastic changes sometimes in radius of isoelectronic ions?

ions atomic-radius

Apr 9 '17 at 4:56 hBy2Py 16k

12

votes

1

answer

5k

views

What are actually the differences between Sidgwick & Powell theory and Nyholm & Gillespie Theory?

history-of-chemistry vsepr-theory

Jun 24 '19 at 13:42 Sibo Chetry 1

12

votes

2

answers

14k

views

Why do molecules have to have a change in dipole moment in order for them to be IR active?

spectroscopy ir-spectroscopy

Jan 16 '17 at 6:35 guest 1

12

votes

2

answers

619

views

Why is the original Pauling's theory of resonance that uses superposition of wavefunctions not used today?

resonance

Jan 7 '19 at 13:36 Community♦ 1

12

votes

1

answer

1k

views

How to analyze a acid and salt mixture using titrimetry?

acid-base analytical-chemistry titration

Feb 16 '16 at 23:10 mhchem 3,253

12

votes

3

answers

6k

views

What is the strongest oxidising agent?

inorganic-chemistry redox

May 22 '19 at 4:38 Karthik 167

12

votes

3

answers

1k

views

Do electronic balance weighings still need to be corrected for buoyancy error?

analytical-chemistry

Oct 22 '17 at 21:26 aventurin 6,395

12

votes

2

answers

2k

views

Why is trimethylsilanol a stronger acid than tert-butanol?

organic-chemistry acid-base organosilicon-compounds

Sep 24 '17 at 15:03 orthocresol♦ 53.2k

12

votes

1

answer

7k

views

Why is the 5d orbital instead of the 4f orbital filled in lanthanum?

inorganic-chemistry electronic-configuration metal

Nov 1 '16 at 15:44 DavePhD 37.1k

12

votes

2

answers

450

views

What is the difference between quantities reported as optical rotation and circular birefringence?

spectroscopy optical-properties

Jul 2 at 21:46 Buttonwood 14k

12

votes

4

answers

1k

views

How is exact racemization possible? [closed]

stereochemistry isomers stereoselectivity

Apr 26 at 1:24 Christian Rau 103

12

votes

1

answer

298

views

Software to assist drawing of complex, three-dimensional skeletal formula from scratch or from existing crystal structure

molecular-structure crystal-structure software

Dec 15 at 16:59 Community♦ 1

11

votes

2

answers

15k

views

Why is copper a better conductor than iron?

metal conductivity

Apr 30 at 8:28 Rodrigo de Azevedo 1,284

11

votes

1

answer

735

views

Is there a name for this algorithm to calculate the concentration of a mixture of two solutions containing the same solute?

solutions analytical-chemistry concentration terminology

Mar 24 '19 at 8:07 Community♦ 1

11

votes

4

answers

1k

views

Largest alkane having a given alkane as its base name

organic-chemistry nomenclature

Dec 31 at 7:31 Karl 9,215

11

votes

2

answers

25k

views

Why do 3d orbitals have lesser energy than 4s orbitals in transition metals? [duplicate]

physical-chemistry electronic-configuration transition-metals

Jan 6 '19 at 16:48 orthocresol♦ 53.2k

11

votes

1

answer

5k

views

Maximum observed optical rotation through a polarimeter

analytical-chemistry stereochemistry chirality optical-properties

Oct 11 '15 at 13:26 Community♦ 1

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What exact color does ozone gas have?

Hybridization of nitrogen in trisilylamine, (SiH3)3N?

Living-cationic vs cationic polymerization

What is the purpose of calculating other orbitals than HOMO and LUMO?

Why does the equilibrium constant change on scaling the stoichiometric coefficients of a reaction?

How are turbostratic graphite phases formed?

Why the salts in a salt bridge?

Why does a hydride like NaH act as a base, but a hydride like NaBH4 act as a nucleophile?

Radiation in space and its effects on chemical reactions?

Why six C atoms are usually seen in cyclic compounds?

Nitrobenzene reduction with (tin) Sn catalyst: Why is C-H bond cleavage preferred over O-H bond cleavage?

Diatomic halogens - bond strength

Why are these molecular orbitals invalid for hexatriene?

Why are there drastic changes sometimes in radius of isoelectronic ions?

What are actually the differences between Sidgwick & Powell theory and Nyholm & Gillespie Theory?

Why do molecules have to have a change in dipole moment in order for them to be IR active?

Why is the original Pauling's theory of resonance that uses superposition of wavefunctions not used today?

How to analyze a acid and salt mixture using titrimetry?

What is the strongest oxidising agent?

Do electronic balance weighings still need to be corrected for buoyancy error?

Why is trimethylsilanol a stronger acid than tert-butanol?

Why is the 5d orbital instead of the 4f orbital filled in lanthanum?

What is the difference between quantities reported as optical rotation and circular birefringence?

How is exact racemization possible? [closed]

Software to assist drawing of complex, three-dimensional skeletal formula from scratch or from existing crystal structure

Why is copper a better conductor than iron?

Is there a name for this algorithm to calculate the concentration of a mixture of two solutions containing the same solute?

Largest alkane having a given alkane as its base name

Why do 3d orbitals have lesser energy than 4s orbitals in transition metals? [duplicate]

Maximum observed optical rotation through a polarimeter