Textbook Question
(a) The density of diamond is 3.5 g>cm3, and that of graphite is 2.3 g>cm3. Based on the structure of buckminsterfullerene, what would you expect its density to be relative to these other forms of carbon?
2395
views
Ch.12 - Solids and Modern Materials
Chapter 12, Problem 126a
(a) What are the C¬C¬C bond angles in diamond?
Verified Solution
Video duration:
1m
This video solution was recommended by our tutors as helpful for the problem above.Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Tetrahedral Geometry
In diamond, each carbon atom is bonded to four other carbon atoms in a tetrahedral arrangement. This geometry arises from the sp3 hybridization of carbon, where the bond angles between the carbon-carbon bonds are approximately 109.5 degrees. This spatial arrangement contributes to the strength and rigidity of the diamond structure.
Recommended video:
Guided course
03:56
Electron Geometry
Bond Angles
Bond angles are the angles formed between two bonds that share a common atom. In the case of diamond, the bond angles between the carbon-carbon bonds are crucial for understanding its three-dimensional structure. The tetrahedral bond angles of 109.5 degrees ensure that the carbon atoms are optimally spaced, minimizing electron pair repulsion according to VSEPR theory.
Recommended video:
Guided course
01:53Bond Angles
Crystal Lattice Structure
Diamond has a crystal lattice structure, which is a repeating pattern of atoms in three-dimensional space. This arrangement not only defines the bond angles but also contributes to diamond's exceptional hardness and thermal conductivity. The regularity of the lattice allows for uniform bond angles and distances, reinforcing the stability of the material.
Recommended video:
Guided course
00:53Lattice Energy
Related Practice
Textbook Question
The karat scale used to describe gold alloys is based on mass percentages. (a) If an alloy is formed that is 50 mol% silver and 50 mol% gold, what is the karat number of the alloy? Use Figure 12.18 to estimate the color of this alloy.
684
views
Textbook Question
The karat scale used to describe gold alloys is based on mass percentages. (b) If an alloy is formed that is 50 mol% copper and 50 mol% gold, what is the karat number of the alloy? What is the color of this alloy?
721
views
Textbook Question
(c) What atomic orbitals are involved in the stacking of graphite sheets with each other?
542
views
Textbook Question
Employing the bond enthalpy values listed in Table 8.4, estimate the molar enthalpy change occurring upon (c) formation of polyethylene terephthalate (PET).
349
views
Textbook Question
Although polyethylene can twist and turn in random ways, the most stable form is a linear one with the carbon backbone oriented as shown in the following figure:
The solid wedges in the figure indicate bonds from carbon that come out of the plane of the page; the dashed wedges indicate bonds that lie behind the plane of the page. (a) What is the hybridization of orbitals at each carbon atom? What angles do you expect between the bonds?
351
views