Domanda del libro di testo
A compound of gallium with chlorine has a melting point of 77°C and a boiling point of 201°C. Is the compound ionic or covalent? What is a likely formula?
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Ch.4 Molecular Compounds
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 4, Problema 38
Which of the following contains a coordinate covalent bond? (Hint: How many covalent bonds would you expect the central atom (underlined/bold) to form?)
a. PbCl2
b. Cu(NH3)42+
c. NH4+
Guida verificata passo dopo passo1
Identify the definition of a coordinate covalent bond: A coordinate covalent bond occurs when one atom donates both electrons to form a shared pair in a covalent bond, typically seen in complex ions or molecules.
Analyze option a (PbCl₂): Lead (Pb) forms bonds with chlorine (Cl) through regular covalent or ionic bonding. There is no evidence of a coordinate covalent bond here.
Analyze option b (Cu(NH₃)₄²⁺): In this complex ion, the central copper ion (Cu²⁺) is surrounded by four ammonia (NH₃) molecules. Each NH₃ molecule donates a lone pair of electrons to the Cu²⁺ ion, forming coordinate covalent bonds.
Analyze option c (NH₄⁺): The ammonium ion (NH₄⁺) is formed when an NH₃ molecule donates a lone pair of electrons to a hydrogen ion (H⁺). This results in a coordinate covalent bond between NH₃ and H⁺.
Conclude: Based on the analysis, options b (Cu(NH₃)₄²⁺) and c (NH₄⁺) contain coordinate covalent bonds, while option a (PbCl₂) does not.
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Covalent Bonding
Covalent bonding occurs when two atoms share one or more pairs of electrons, allowing each atom to attain a stable electron configuration. This type of bond is typically formed between nonmetals and can be classified into single, double, or triple bonds based on the number of shared electron pairs.
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01:04
Covalent Bonds Example 1
Coordinate Covalent Bond
A coordinate covalent bond, also known as a dative bond, is a specific type of covalent bond where one atom donates both electrons to the bond. This often occurs in complex ions or molecules where a central atom, such as a metal, accepts a lone pair of electrons from a donor atom, leading to unique bonding scenarios.
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01:04Covalent Bonds Example 1
Central Atom and Valency
The central atom in a molecule is typically the atom that forms the most bonds and is often a metal or a nonmetal with a higher valency. Understanding the expected number of bonds that the central atom can form is crucial for predicting the type of bonds present, including whether coordinate covalent bonds are involved in the structure.
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01:14Valence Electrons of Elements (Simplified) Example 1
Pratica correlata
Domanda del libro di testo
Identify the bonds formed between the following pairs of atoms as either covalent or ionic.
d. Zinc and fluorine
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Domanda del libro di testo
What is a coordinate covalent bond, and how does it differ from a covalent bond?
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Domanda del libro di testo
Distinguish between the following:
c. A lone pair and a shared pair of electrons
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Domanda del libro di testo
Distinguish between the following:
b. A structural formula and a condensed structure
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Domanda del libro di testo
Write electron-dot symbols to show the number of covalent bonds and the lone pairs of electrons in the molecules that are formed by reactions between the atoms in Problem 4.34.
a. Aluminum and bromine
b. Carbon and fluorine
c. Cesium and iodine
d. Zinc and fluorine
e. Lithium and chlorine
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