Domanda del libro di testo
Arrange the bonds in each of the following sets in order of increasing polarity: (c) C—S, B—F, N—O.
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Ch.8 - Basic Concepts of Chemical Bonding
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 8, Problema 43a
(a) From the data in Table 8.2, calculate the effective charges on the H atom of the HBr molecule in units of the electronic charge, e.
Guida verificata passo dopo passo1
Identify the concept of electronegativity and how it relates to effective charge. Electronegativity is a measure of an atom's ability to attract and hold onto electrons.
Look up the electronegativity values for hydrogen (H) and bromine (Br) from Table 8.2. These values will help determine the polarity of the H-Br bond.
Calculate the difference in electronegativity between Br and H. This difference will indicate the direction and magnitude of the dipole moment in the HBr molecule.
Use the concept of partial charges to express the effective charge on the H atom. The partial charge (δ) can be estimated using the formula: δ = (ΔEN / 4), where ΔEN is the electronegativity difference.
Express the effective charge on the H atom in units of the electronic charge, e, by considering the partial charge calculated in the previous step.
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Effective Charge
Effective charge refers to the net charge experienced by an electron in an atom, taking into account the shielding effect of other electrons. In molecules, this concept helps to understand how the distribution of electron density affects the behavior of atoms within a compound, such as HBr, where the hydrogen atom's effective charge can be influenced by the presence of bromine.
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Percorso guidato
01:51
Effective Nuclear Charge
Electronegativity
Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond. In the case of HBr, bromine is significantly more electronegative than hydrogen, which leads to a polar covalent bond. This difference in electronegativity is crucial for calculating the effective charge on the hydrogen atom.
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02:10Electronegativity Trends
Molecular Dipole Moment
The molecular dipole moment is a vector quantity that represents the separation of positive and negative charges in a molecule. It is influenced by the effective charges on the atoms and their spatial arrangement. In HBr, the dipole moment arises from the unequal sharing of electrons, which is essential for understanding the effective charge on the hydrogen atom.
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01:25Dipole Moment
Pratica correlata
Domanda del libro di testo
(b) If you were to put HBr under very high pressure, so its bond length decreased significantly, would its dipole moment increase, decrease, or stay the same, if you assume that the effective charges on the atoms do not change?
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Domanda del libro di testo
In the following pairs of binary compounds, determine which one is a molecular substance and which one is an ionic substance. Use the appropriate naming convention (for ionic or molecular substances) to assign a name to each compound: (a) SiF4 and LaF3 (for ionic or molecular substances) to assign a name to each compound: (b) FeCl2 and ReCl6 (c) PbCl4 and RbCl.
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Domanda del libro di testo
The iodine monobromide molecule, IBr, has a bond length
of 249 pm and a dipole moment of 1.21 D. (a) Which atom of
the molecule is expected to have a negative charge?
1344
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Domanda del libro di testo
Arrange the bonds in each of the following sets in order of increasing polarity: (a) C—F, O—F, Be—F (b) O—Cl,S—Br, C—P
1222
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Domanda del libro di testo
Which of the following bonds are polar? (a) C—O, (b) Sl—F, (c) N—Cl, (d) C—Cl. Which is the more electronegative atom in each polar bond?
1752
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