User Nicolau Saker Neto

14

votes

2

answers

21k

views

Why are full and half filled orbitals the most stable?

quantum-chemistry

Nov 6 '16 at 0:10 getafix 7,899

14

votes

3

answers

831

views

Why can't a reaction go to completion?

Apr 25 '19 at 22:13 Community♦ 1

13

votes

4

answers

1k

views

Room-conditions supercritical fluids?

physical-chemistry phase pressure

Nov 13 '18 at 19:12 Mithoron 4,120

13

votes

1

answer

8k

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 37.6k

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

1

answer

512

views

Is HF the only method for trying to solve the many-electron Schrödinger equation?

quantum-chemistry computational-chemistry

May 7 at 12:12 Zythos 638

13

votes

3

answers

12k

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 6,623

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. 9,660

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

63k

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 8,056

13

votes

1

answer

5k

views

Diatomic halogens - bond strength

bond molecular-orbital-theory

Nov 18 at 8:02 Santosh 1

13

votes

1

answer

9k

views

What is Sodium Chloride like in gas state?

physical-chemistry ionic-compounds

Jul 7 '14 at 14:10 ron 78.1k

13

votes

2

answers

10k

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 8,056

13

votes

1

answer

490

views

Radiation in space and its effects on chemical reactions?

theoretical-chemistry electromagnetic-radiation

Dec 31 '15 at 14:51 MaxW 20.6k

13

votes

0

answers

205

views

Densest hydrogen storage medium [closed]

inorganic-chemistry materials hydrogen

Dec 25 '17 at 22:53 Community♦ 1

12

votes

2

answers

464

views

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

spectroscopy optical-properties

Jul 2 at 21:46 Buttonwood 16k

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

2

answers

2k

views

Vapor pressure and boiling point for solutions in open containers

vapor-pressure

May 16 at 15:49 Buck Thorn 13.8k

12

votes

1

answer

350

views

What are the criteria for a molecule to be chiral?

stereochemistry chirality

Jan 17 at 2:13 orthocresol♦ 56.1k

12

votes

1

answer

688

views

Why doesn't ionization energy decrease from O to F or F to Ne?

periodic-trends ionization-energy

Jan 17 at 20:26 orthocresol♦ 56.1k

12

votes

2

answers

373

views

Can non-deuterated solvents be used for 13C-NMR (and in fact other nuclei)?

nmr-spectroscopy

Aug 28 at 16:38 Buttonwood 16k

12

votes

3

answers

24k

views

Why is active mass of a pure solid or liquid always taken as unity?

physical-chemistry concentration phase

Jan 8 at 6:03 Md_Asher 1

12

votes

2

answers

391

views

Do multielectron atoms have nodes?

quantum-chemistry atoms electrons orbitals

Jan 17 '17 at 17:41 DavePhD 37.6k

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 1,521

12

votes

1

answer

823

views

Why do biphasic systems of fluorous and organic solvents form?

solubility solvents

May 24 '12 at 6:26 Janice DelMar 5,808

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 16.2k

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

680

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

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Why are full and half filled orbitals the most stable?

Why can't a reaction go to completion?

Room-conditions supercritical fluids?

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

What exact color does ozone gas have?

Is HF the only method for trying to solve the many-electron Schrödinger equation?

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

Living-cationic vs cationic polymerization

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

How are turbostratic graphite phases formed?

Why the salts in a salt bridge?

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

Diatomic halogens - bond strength

What is Sodium Chloride like in gas state?

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?

Densest hydrogen storage medium [closed]

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

How is exact racemization possible? [closed]

Vapor pressure and boiling point for solutions in open containers

What are the criteria for a molecule to be chiral?

Why doesn't ionization energy decrease from O to F or F to Ne?

Can non-deuterated solvents be used for 13C-NMR (and in fact other nuclei)?

Why is active mass of a pure solid or liquid always taken as unity?

Do multielectron atoms have nodes?

Why are these molecular orbitals invalid for hexatriene?

Why do biphasic systems of fluorous and organic solvents form?

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