Interpretation:
The movement of electronsis to be described in a solar battery that uses p-type and n-type semiconductors, during the exposure of solar light.
Concept introduction:
Semiconductors are solids that have a conductivity that lies between that of conductors and insulators.
The gap between theirconduction bands and valence bands is small, so electrons may jump from the valence band to the conduction band.
The addition of very small quantity of an element with one more or one fewer valence electrons than the natural semiconductor is called doping.
The addition of very small quantity of an element that has extra electrons than the natural semiconductor, the electron increases its conductivity and the semiconductor is called n-type semiconductor.
The addition of very small quantity of an element which has fewer valence electrons than the natural semiconductor, creating a hole in semiconductor. These holes increaseits conductivity and the semiconductor is called p-type semiconductor.

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Chapter 12 Solutions
BURDGE CHEMISTRY VALUE ED (LL)
- Construct a molecular orbital energy-level diagram for BeH2. Sketch the MO pictures (schematic representation) for the HOMO and LUMO of BeH2 [Orbital Potential Energies, H (1s): -13.6 eV; Be (2s): -9.3 eV, Be (2p): -6.0 eV]arrow_forwardIndicate the isomers of the A(H2O)6Cl3 complex. State the type of isomerism they exhibit and explain it briefly.arrow_forwardState the formula of the compound potassium μ-dihydroxydicobaltate (III) tetraoxalate.arrow_forward
- Consider the reaction of the cyclopentanone derivative shown below. i) NaOCH2CH3 CH3CH2OH, 25°C ii) CH3!arrow_forwardWhat constitutes a 'reference material', and why does its utilization play a critical role in the chemical analysis of food products? Provide examples.arrow_forwardExplain what calibration is and why it is essential in relation to food analysis. Provide examples.arrow_forward
- The cobalt mu-hydroxide complex cobaltate(III) of potassium is a dinuclear complex. Correct?arrow_forwardThe cobalt mi-hydroxide complex cobaltate(III) of potassium is a dinuclear complex. Correct?arrow_forward3. Arrange the different acids in Exercise B # 2 from the strongest (1) to the weakest acid (10). 1. 2. (strongest) 3. 4. 5. 6. 7. 8. 9. 10 10. (weakest)arrow_forward
- Name Section Score Date EXERCISE B pH, pOH, pка, AND PKD CALCULATIONS 1. Complete the following table. Solution [H+] [OH-] PH РОН Nature of Solution A 2 x 10-8 M B 1 x 10-7 M C D 12.3 6.8 2. The following table contains the names, formulas, ka or pka for some common acids. Fill in the blanks in the table. (17 Points) Acid Name Formula Dissociation reaction Ka pka Phosphoric acid H₂PO₁ H3PO4 H++ H₂PO 7.08 x 10-3 Dihydrogen H₂PO H₂PO H+ HPO 6.31 x 10-6 phosphate Hydrogen HPO₁ 12.4 phosphate Carbonic acid H2CO3 Hydrogen HCO 6.35 10.3 carbonate or bicarbonate Acetic acid CH,COOH 4.76 Lactic acid CH₂CHOH- COOH 1.38 x 10 Ammonium NH 5.63 x 10-10 Phenol CH₂OH 1 x 10-10 Protonated form CH3NH3* 3.16 x 10-11 of methylaminearrow_forwardIndicate whether it is true that Co(III) complexes are very stable.arrow_forwardMnO2 acts as an oxidant in the chlorine synthesis reaction.arrow_forward
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning

