Domanda del libro di testo
Using only the periodic table as your guide, select the most electronegative atom in each of the following sets: (a) Se, Te, Br, I; (b) Be, Mg, C, Si (c) Al, Si, P, S (d) Zn, Ge, Ga, As.
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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 41
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?
Guida verificata passo dopo passo1
insert step 1> Determine the electronegativity values of the elements involved in each bond. You can refer to a periodic table with electronegativity values for this purpose.
insert step 2> Compare the electronegativity values of the two atoms in each bond. A bond is considered polar if there is a significant difference in electronegativity between the two atoms.
insert step 3> For each bond, if the difference in electronegativity is greater than approximately 0.5, the bond is polar.
insert step 4> Identify the more electronegative atom in each polar bond. The more electronegative atom will attract the shared electrons more strongly, resulting in a partial negative charge.
insert step 5> List the polar bonds and indicate the more electronegative atom for each.
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Electronegativity
Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond. It varies across the periodic table, with elements like fluorine being highly electronegative. In a bond between two different atoms, the atom with higher electronegativity will attract the shared electrons more strongly, leading to a polar bond.
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02:10
Electronegativity Trends
Polar Bonds
A polar bond occurs when there is a significant difference in electronegativity between the two atoms involved in the bond. This difference causes an uneven distribution of electron density, resulting in a dipole moment where one end of the bond is slightly negative and the other slightly positive. Bonds are considered polar if the electronegativity difference is typically greater than 0.4.
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02:38Molecular Polarity
Dipole Moment
The dipole moment is a vector quantity that represents the separation of positive and negative charges in a polar bond. It is calculated as the product of the charge difference and the distance between the charges. A larger dipole moment indicates a stronger polarity, which can influence the physical properties of molecules, such as solubility and boiling points.
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01:25Dipole Moment
Pratica correlata
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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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Domanda del libro di testo
(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.
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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
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Domanda del libro di testo
By referring only to the periodic table, select (d) the element in the group K, C, Zn, F that is most likely to form an ionic compound with Ba.
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Domanda del libro di testo
By referring only to the periodic table, select (a) the most electronegative element in group 13; (b) the least electronegative element in the group As, Se and Br;