Search found 30 matches
- Sat Dec 08, 2018 7:16 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: ions
- Replies: 3
- Views: 37
Re: ions
Cations lose electrons, giving a positive charge
- Sat Dec 08, 2018 7:11 pm
- Forum: Lewis Acids & Bases
- Topic: H-
- Replies: 3
- Views: 24
Re: H-
Bronsted base because H- is a proton acceptor
- Sat Dec 08, 2018 7:07 pm
- Forum: Lewis Structures
- Topic: Lewis Acids & Bases
- Replies: 3
- Views: 32
Re: Lewis Acids & Bases
Lewis acids are defined as accepting a pair of electrons whilst the Lewis bases are donors of electrons. So it would be based on whether the molecule accepts or gives electron pairs
- Sat Dec 08, 2018 7:03 pm
- Forum: Electronegativity
- Topic: Exceptions
- Replies: 3
- Views: 34
Re: Exceptions
I do not think there are exceptions to the electronegativity trend which goes up and to the right on the periodic table
- Sat Dec 08, 2018 7:02 pm
- Forum: Hybridization
- Topic: Expanded Octet Hybridizations
- Replies: 2
- Views: 26
Re: Expanded Octet Hybridizations
because d orbitals allow those elements to have expanded octets so hybridization can show the d along with the s and p orbitals due to the large amount of valence electrons
- Fri Dec 07, 2018 8:33 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis v Bronsted
- Replies: 2
- Views: 30
Re: Lewis v Bronsted
Lewis describes lewis acid as an acceptor of a lone pair of electrons whilst Bronstead describes an acid as a donor of a proton
- Fri Dec 07, 2018 8:31 pm
- Forum: Lewis Structures
- Topic: Elements that break the octet rule
- Replies: 6
- Views: 58
Re: Elements that break the octet rule
The elements in the d block can violate the octet rule because of the presence of the d orbital into which more electrons can reside
- Fri Dec 07, 2018 8:30 pm
- Forum: Hybridization
- Topic: pi vs sigma
- Replies: 12
- Views: 84
Re: pi vs sigma
Sigma bonds overlap more than pi bonds, allowing for more strength whilst also allowing for rotation
- Fri Dec 07, 2018 8:27 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizing Power: Size vs. Charge
- Replies: 3
- Views: 46
Re: Polarizing Power: Size vs. Charge
Smaller atomic radius cations have more polarizing power. A higher charge also gives more polarizing power
- Fri Dec 07, 2018 8:25 pm
- Forum: Octet Exceptions
- Topic: Exceptions
- Replies: 7
- Views: 97
Re: Exceptions
elements in the d block are exceptions as they are able to fill their d orbital with more electrons, allowing for an expanded octet
- Fri Dec 07, 2018 8:23 pm
- Forum: Electronegativity
- Topic: Ionic Character
- Replies: 5
- Views: 47
Re: Ionic Character
I believe oxygen is more electronegative as it is higher than chlorine on the periodic table
- Fri Dec 07, 2018 8:21 pm
- Forum: Sigma & Pi Bonds
- Topic: Number of sigma and pi bonds
- Replies: 5
- Views: 60
Re: Number of sigma and pi bonds
a single bond corresponds to a sigma bond, whilst a double bond is 1 sigma and 1 pi and a triple bond is 1 sigma and 2 pis
- Fri Dec 07, 2018 8:18 pm
- Forum: Properties of Electrons
- Topic: Orbitals
- Replies: 5
- Views: 134
Re: Orbitals
p shell has 3 orbitals I believe
- Fri Dec 07, 2018 8:15 pm
- Forum: Properties of Light
- Topic: Speed of light
- Replies: 13
- Views: 89
Re: Speed of light
3X10^8 should be fine I think
- Sun Nov 25, 2018 8:13 pm
- Forum: Hybridization
- Topic: 2F.1 7th Edition
- Replies: 1
- Views: 14
2F.1 7th Edition
Can someone explain the solution for 2F.1 in the 7th Edition? "State the relative orientation of each of the following hybrid orbitals: (a)sp^3; (b) sp; (c)sp^3d^2; (d) sp^2.
- Sun Nov 25, 2018 8:06 pm
- Forum: Hybridization
- Topic: Octet Expansion
- Replies: 6
- Views: 46
Re: Octet Expansion
electrons fill up the s and p orbital. once those orbitals are filled, d orbital is needed for an atom to have more than 8 valence electrons
- Sun Nov 25, 2018 8:01 pm
- Forum: Bond Lengths & Energies
- Topic: Why Are Double Bonds Shorter
- Replies: 3
- Views: 40
Why Are Double Bonds Shorter
Howdy partners. What is the reasoning for why double bonds are shorter (and therefore stronger) than single bonds? Thanks
- Sun Nov 25, 2018 7:53 pm
- Forum: Octet Exceptions
- Topic: Understanding Expanded Octets
- Replies: 1
- Views: 19
Understanding Expanded Octets
Howdy. Can one of ya'll explain how having a greater number of orbitals, such as a d orbital, allow an element to have an expanded octet? Thanks.
- Sun Oct 28, 2018 7:15 pm
- Forum: Ionic & Covalent Bonds
- Topic: 2A.21 7th Edition Question
- Replies: 2
- Views: 22
2A.21 7th Edition Question
Howdy ya'll. Can someone explain why the ground state electron configuration for Ag^+ is [Kr]4d^10 in question 2A.21? Thanks
- Sun Oct 28, 2018 7:06 pm
- Forum: Ionic & Covalent Bonds
- Topic: 2A.6 7th Edition
- Replies: 1
- Views: 16
2A.6 7th Edition
Howdy! 2A.6 asks for the ground-state electron configuration of the ion P^3-. Can someone explain how I would go about solving this?
- Sun Oct 28, 2018 7:00 pm
- Forum: Ionic & Covalent Bonds
- Topic: Question regarding ionic bonds
- Replies: 9
- Views: 61
Question regarding ionic bonds
Howdy partners. Are ionic bonds always between non-metals and metals?
- Sun Oct 21, 2018 7:02 pm
- Forum: Properties of Electrons
- Topic: Concept Behind Orbitals
- Replies: 6
- Views: 54
Concept Behind Orbitals
Howdy there. I was wondering about the conceptual explanation behind why higher orbitals have more energy. Is it because of distance from the positively charged nucleus?
- Sun Oct 21, 2018 7:00 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: HW Question Regarding 1B.27
- Replies: 6
- Views: 90
HW Question Regarding 1B.27
Howdy! 1B.27 says "A bowling ball of masss 8.00 kg is rolled down a bowling alley lane at 5.00 +/ 5.0 m/s. What is the minimum uncertainty in its position?" Can one of ya'll explain to me how I use the uncertainty equation to obtain the minimum uncertainty?
- Sun Oct 21, 2018 6:55 pm
- Forum: DeBroglie Equation
- Topic: 1B. 25 7th Edition
- Replies: 2
- Views: 34
1B. 25 7th Edition
Howdy ya'll. 1B.25 states "What is the minimum uncertainty in the speed of an electron confined within a lead atom of diameter 350 pm? Can somebody explain how to obtain the solution please. Thanks
- Sun Oct 14, 2018 7:25 pm
- Forum: Properties of Light
- Topic: Photons
- Replies: 4
- Views: 79
Re: Photons
A single photon requires the sufficient energy needed to remove a single electron. :)
- Sun Oct 14, 2018 7:23 pm
- Forum: Properties of Light
- Topic: Measurable Wavelengths
- Replies: 3
- Views: 25
Measurable Wavelengths
Does anybody know how long a wavelength must be to be "measurable"?
- Sun Oct 14, 2018 7:19 pm
- Forum: Properties of Light
- Topic: 1A.3 7th Edition Question
- Replies: 4
- Views: 57
1A.3 7th Edition Question
1A.3 Which of the following happens when the frequency of electromagnetic radiation decreases? Explain your reasoning. (c) The extent of the change in the electrical field at a given point decreases. Can someone explain what happens to the "extent of the change in the electrical field at a give...
- Sun Oct 07, 2018 5:09 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: E15 7th Edition
- Replies: 1
- Views: 51
E15 7th Edition
The molar mass of the metal hydroxide M(OH)2 is 74.10 gmol. What is the molar mass of the sulfide of this metal? I understand how to obtain molar mass but how do I identify the sulfide of M(OH)2? Thanks
- Sun Oct 07, 2018 5:06 pm
- Forum: SI Units, Unit Conversions
- Topic: Question regarding showing units within work
- Replies: 2
- Views: 43
Question regarding showing units within work
When working on the answer to a question, does anybody know if we have to show units in our work? I understand our final answer must have units.
- Sun Oct 07, 2018 5:03 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Atomic Weight vs Molecular Weight
- Replies: 2
- Views: 26
Re: Atomic Weight vs Molecular Weight
I believe atomic weight is the measured weight of the atom whilst the molecular weight is the measured weight of the molecule (so add weights of the atoms within the molecule). ;)