Domanda del libro di testo
What general trends in electronegativity occur in the periodic table?
657
views
Ch.7 - Covalent Bonding and Electron-Dot Structures
McMurry8th EditionChemistryISBN: 9781292336145
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
Tutti i libri di testo
McMurry 8th EditionCh.7 - Covalent Bonding and Electron-Dot StructuresProblema 42
McMurry 8th EditionCh.7 - Covalent Bonding and Electron-Dot StructuresProblema 42Capitolo 7, Problema 42
Explain the difference in the bond dissociation energies for the following bonds: (C-F, 450 kJ/mol), (N-F, 270 kJ/mol), (O-F, 180 kJ/mol), (F-F, 159 kJ/mol).
Guida verificata passo dopo passo1
Identify the bond dissociation energy (BDE) for each bond: C-F (450 kJ/mol), N-F (270 kJ/mol), O-F (180 kJ/mol), F-F (159 kJ/mol).
Understand that bond dissociation energy is the energy required to break a bond in a molecule, indicating bond strength.
Consider the electronegativity of the atoms involved: Fluorine is highly electronegative, affecting bond strength with different atoms.
Analyze the bond length: Shorter bonds are generally stronger, contributing to higher BDE.
Compare the atomic sizes and electronegativity differences: Larger differences in electronegativity and smaller atomic sizes typically result in stronger bonds, explaining the trend in BDE values.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Bond Dissociation Energy
Bond dissociation energy (BDE) is the energy required to break a bond in a molecule, resulting in the formation of separate atoms. It is a measure of bond strength; higher BDE values indicate stronger bonds. BDE can vary significantly between different types of bonds due to factors such as atomic size, electronegativity, and the presence of lone pairs.
Video consigliato:
Percorso guidato
01:50
Bond Energy
Electronegativity
Electronegativity is the tendency of an atom to attract electrons in a chemical bond. In the context of the bonds mentioned, fluorine is highly electronegative, which affects the bond strength with other elements. The differences in electronegativity between the bonded atoms can lead to variations in bond character (ionic vs. covalent) and, consequently, the bond dissociation energies.
Video consigliato:
Percorso guidato
02:10Electronegativity Trends
Atomic Size and Bond Length
Atomic size influences bond length, which in turn affects bond strength. Smaller atoms can form shorter, stronger bonds due to effective overlap of their atomic orbitals. In the case of the bonds listed, the size of the atoms involved (C, N, O, and F) contributes to the observed differences in bond dissociation energies, as shorter bonds generally have higher BDEs.
Video consigliato:
Percorso guidato
02:10Atom Structure
Pratica correlata
Domanda del libro di testo
Match the following descriptions with the type of bond (ionic, nonpolar covalent, covalent).
(a) One or more electrons are transferred from a metal to a nonmetal atom.
923
views
Domanda del libro di testo
Why do two atoms come together to form a covalent bond?
(a) Attractive forces between the positively charged nuclei and the electrons in both atoms occur when the atoms are close together.
(b) Repulsive forces between protons in the nuclei of the two atoms are minimized when the atoms are close together.
(c) Repulsive forces between electrons in the two atoms are minimized when the atoms are close together.
953
views
Domanda del libro di testo
The following ball-and-stick molecular model is a representation of thalidomide, a drug that causes birth defects when taken by expectant mothers but is valuable for its use against leprosy. The lines indicate only the connections between atoms, not whether the bonds are single, double, or triple. (Red = O, gray = C, blue = N, ivory = H). Give the formula of thalidomide, and indicate the positions of multiple bonds and lone pairs.
667
views
Domanda del libro di testo
Predict the electronegativity of the undiscovered element with Z = 119.
509
views