Concept explainers
Interpretation:
Given statements has to be explained.
Concept introduction:
Types of solid
- Molecular solid
- Metallic solid
- Ionic solid
- Covalent network
Molecular solid:
A solid which consist of atoms or molecule thought intermolecular force.
Metallic solid:
The solid which consist of metal atom held together by metallic bonds. Metallic bonding is
Ionic solid:
A solid which consist of anions and cations held together by ionic bond (electrical attraction of opposite charges).
Covalent network:
A solid that involves atoms held together by great network or shackles by covalent bonds.
Diamond and graphite are great example.
(b)
Interpretation:
Given statements has to be explained.
Concept introduction:
Types of solid
- Molecular solid
- Metallic solid
- Ionic solid
- Covalent network
Molecular solid:
A solid which consist of atoms or molecule thought intermolecular force.
Metallic solid:
The solid which consist of metal atom held together by metallic bonds. Metallic bonding is chemical bond formed by attraction between cation of metal and the surrounding sea of electrons.
Ionic solid:
A solid which consist of anions and cations held together by ionic bond (electrical attraction of opposite charges).
Covalent network:
A solid that involves atoms held together by great network or shackles by covalent bonds.
Diamond and graphite are great example.
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Chapter 11 Solutions
OWLv2 for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 1 term (6 months)
- 8.13 What is the coordination number of atoms in the diamond structure?arrow_forwardExplain :(a) List two differences between metallic and ionic crystals.(b) Sodium chloride is hard but sodium metal is soft.arrow_forward12. Which one of the following statements is INCORRECT: (A) X-ray crystallography can give the three-dimensional arrangement of all the atoms in a molecule The ratio of the two main isotopes of Cl (chlorine) is about 3:1 (B) (C) The index of hydrogen deficiency (IDH) for C5H8O is 4. (D) Generally speaking, the longer the wavelength of the UV-Vis spectrum maximum (2max), the more conjugated the molecule is. The energy of photons used in UV-Vis spectroscopy is much higher than those used in NMR spectroscopy. (E)arrow_forward
- Describe the features of Network Covalent Atomic Solids, Carbon and Silicates?arrow_forwardThe gap between valence and conduction bands in diamond is 5.47 eV. (a) What is the maximum wavelength of a photon that can excite an electron from the top of the valence band into the conduction band? In what region of the electromagnetic spectrum does this photon lie? (b) Explain why pure diamond is transparent and colorless.arrow_forwardThe melting point of neon is significantly lower than that of nitrogen, oxygen, of fluorine. Provide a justification for this observation.arrow_forward
- Which of these statements about alloys and intermetallic compoundsis false? (a) Bronze is an example of an alloy. (b) “Alloy”is just another word for “a chemical compound of fixedcomposition that is made of two or more metals.” (c) Intermetallicsare compounds of two or more metals that have a definitecomposition and are not considered alloys. (d) If you mixtwo metals together and, at the atomic level, they separate intotwo or more different compositional phases, you have createda heterogeneous alloy. (e) Alloys can be formed even if the atomsthat comprise them are rather different in size.arrow_forwardWhat are the various phases of SiO2?arrow_forwardCrystal structure of Alo.5Gao.5AS Based on the zincblende crystal structure for GaAs, sketch the structure of Alo.sGao.5As. The lattice constant for Alo.sGao.5As is a = 5.653 Å. (a) Calculate the atomic density per unit volume for Alo.5Gao.5As. (b) What is the atomic density per unit area on the (100) and (110) planes? (c) The atomic radii for Al, Ga, and As are, respectively, 1.25 Å, 1.30 Å, and 1.15 Å. Using the hard-sphere model, estimate the lattice constant for Alo.5GA0.5As and compare the result with the value given above.arrow_forward
- Classify as n-type or p-type a semiconductor formed by doping (a) germanium with phosphorus, (b) germanium with indium.arrow_forwardAn ideal quantum dot for use in TVs does not contain anycadmium due to concerns about disposal. One potentialmaterial for this purpose is InP, which adopts the zincblende (ZnS) structure (face-centered cubic). The unit celledge length is 5.869 Å. (a) If the quantum dot is shaped likea cube, how many of each type of atom are there in a cubiccrystal with an edge length of 3.00 nm? 5.00 nm? (b) Ifone of the nanoparticles in part (a) emits blue light and theother emits orange light, which color is emitted by the crystalwith the 3.00-nm edge length? With the 5.00-nm edgelength?arrow_forwardAn ideal quantum dot for use in TVs does not contain anycadmium due to concerns about disposal. One potentialmaterial for this purpose is InP, which adopts the zinc blende (ZnS) structure (face-centered cubic). The unit celledge length is 5.869 Å. (a) If the quantum dot is shaped likea cube, how many of each type of atom are there in a cubiccrystal with an edge length of 3.00 nm? 5.00 nm? (b) Ifone of the nanoparticles in part (a) emits blue light and theother emits orange light, which color is emitted by the crystalwith the 3.00-nm edge length? With the 5.00-nm edgelength?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
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