Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243



Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 19, Problem 33E
Textbook Problem

Discuss the importance of the C8C and Si8Si bond strengths and of π bonding to the properties of carbon and silicon.

Interpretation Introduction

Interpretation: The importance of C-C and Si-Si bond strengths and pi bonding to the properties of carbon and silicon is to be discussed.

Concept introduction: Carbon is one of the fundamental molecules which is necessary for life whereas silicon forms the basis of geological world. Physical properties of carbon differ from rest of the members of group 14.

To determine: The importance of C-C and Si-Si bond strengths and pi bonding to the properties of carbon and silicon.

Explanation of Solution


Both carbon and silicon are members of group 4A (14). The bond energy of C-C bond is 347 kJ/mol whereas the bond energy of Si-Si bond is 340 kJ/mol . The C-C bond is covalent thus it is stronger. Carbon is a typical non-metal while silicon is a semi-metal.

Carbon differs from the other member of group 4A (14) due to its ability to form pi bonds. Since vacant d orbital is present on sulfur, it can expand its covalency

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Chapter 19 Solutions

Chemistry: An Atoms First Approach
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Ch. 19 - Although the earth was formed from the same...Ch. 19 - List two major industrial uses of hydrogen.Ch. 19 - How do the acidities of the aqueous solutions of...Ch. 19 - Diagonal relationships in the periodic table exist...Ch. 19 - Atomic size seems to play an important role in...Ch. 19 - Silicon carbide (SiC) is an extremely hard...Ch. 19 - In most compounds, the solid phase is denser than...Ch. 19 - What is nitrogen fixation? 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Predict the...Ch. 19 - Give the Lewis structure, molecular structure, and...Ch. 19 - Fluorine reacts with sulfur to form several...Ch. 19 - Predict some possible compounds that could form...Ch. 19 - How does the oxyacid strength of the halogens vary...Ch. 19 - Explain why HF is a weak acid, whereas HCI, HBr,...Ch. 19 - The xenon halides and oxides are isoelectronic...Ch. 19 - For each of the following, write the Lewis...Ch. 19 - Although He is the second most abundant element in...Ch. 19 - The noble gas with the largest atmospheric...Ch. 19 - There is evidence that radon reacts with fluorine...Ch. 19 - For the RnFx compounds you predicted in Exercise...Ch. 19 - Hydrazine (N2H4) is used as a fuel in...Ch. 19 - The inert-pair effect is sometimes used to explain...Ch. 19 - How could you determine experimentally whether the...Ch. 19 - The resistivity (a measure of electrical...Ch. 19 - Slaked lime, Ca(OH)2 is used to soften hard water...Ch. 19 - EDTA is used as a complexing agent in chemical...Ch. 19 - Photogray lenses contain small embedded crystals...Ch. 19 - Draw Lewis structures for the AsCl4+ and AsCl6...Ch. 19 - Provide a reasonable estimate for the number of...Ch. 19 - In large doses, selenium is toxic. However, in...Ch. 19 - In the 1950s and 1960s, several nations conducted...Ch. 19 - What is a disproportionation reaction? Use the...Ch. 19 - Sulfur forms a wide variety of compounds in which...Ch. 19 - Halogens form a variety of covalent compounds with...Ch. 19 - Hydrogen gas is being considered as a fuel for...Ch. 19 - Molten CaC12 is electrolyzed for 8.00 h to produce...Ch. 19 - Calculate the solubility of Mg(OH)2 (Ksp = 8.9 ...Ch. 19 - Which of the following statement(s) is(are) true?...Ch. 19 - What is the hybridization of the underlined...Ch. 19 - Nitrous oxide (N2O) can be produced by thermal...Ch. 19 - What is the hybridization of the central atom in...Ch. 19 - What is the molecular structure for each of the...Ch. 19 - The atmosphere contains 9.0 106% Xe by volume at...Ch. 19 - Which of following statement(s) is/are true? a....Ch. 19 - Suppose 10.00 g of an alkaline earth metal reacts...Ch. 19 - From the information on the temperature stability...Ch. 19 - Lead forms compounds in the +2 and +4 oxidation...Ch. 19 - Many structures of phosphorus-containing compounds...Ch. 19 - Use bond energies (see Table 3-3) to show that the...Ch. 19 - A proposed two-step mechanism for the destruction...Ch. 19 - You travel to a distant, cold planet where the...Ch. 19 - Nitrogen gas reacts with hydrogen gas to form...Ch. 19 - A cylinder fitted with a movable piston initially...Ch. 19 - The heaviest member of the alkaline earth metals...Ch. 19 - lndium(III) phosphide is a semiconducting material...Ch. 19 - Although nitrogen trifluoride (NF3) is a thermally...Ch. 19 - While selenic acid has the formula H2SeO4 and thus...Ch. 19 - Captain Kirk has set a trap for the Klingons who...Ch. 19 - Use the symbols of the elements described in the...

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