Concept explainers
Interpretation:
The electron population of bands of MO energy levels for elements carbon (diamond), silicon, germanium, gray tin, and white tin should be drawn.
Concept introduction:
The band theory is used to explain hardness, electrical conductivity, the melting point for different metals. It can be explained as a theory related to a set of MOs that have less energy difference between them. These sets of MOs also known as bands. The melting point of any metal depends on the occupancy of both MOs, bonding and antibonding. When the electron from bonding MO can be excessed easily relative to antibonding MO electrons, then melting point metal is higher.
The difference between the conduction band and valence band is known as bandgap. This bandgap is used to classify materials as conducting metals, insulators, and semiconductors.
In metallic conductors, the band conduction and valence band get overlapped and there is zero energy difference. In insulators, the bandgap is very large and no electron can jump from valence to conduction band.
When there are partially filled electrons in the conduction band and partially empty valence band then the material is known as a semiconductor.

Want to see the full answer?
Check out a sample textbook solution
Chapter 12 Solutions
LCPO CHEMISTRY W/MODIFIED MASTERING
- Indicate the products obtained by mixing 2,2-dimethylpropanal with acetaldehyde and sodium ethoxide in ethanol.arrow_forwardSynthesize 2-Ethyl-3-methyloxirane from dimethyl(propyl)sulfonium iodide using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize 2-Hydroxy-2-phenylacetonitrile from phenylmethanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forward
- Synthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIf possible, please provide the formula of the compound 3,3-dimethylbut-2-enal.arrow_forward
- Synthesize 1,4-dibromobenzene from acetanilide (N-phenylacetamide) using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIndicate the products obtained by mixing (3-oxo-3-phenylpropyl)triphenylphosphonium bromide with sodium hydride.arrow_forwardWe mix N-ethyl-2-hexanamine with excess methyl iodide and followed by heating with aqueous Ag2O. Indicate the major products obtained.arrow_forward
- Indicate the products obtained by mixing acetophenone with iodine and NaOH.arrow_forwardIndicate the products obtained by mixing 2-Propanone and ethyllithium and performing a subsequent acid hydrolysis.arrow_forwardIndicate the products obtained if (E)-2-butenal and 3-oxo-butanenitrile are mixed with sodium ethoxide in ethanol.arrow_forward
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
