Chapter14.June02 - Chapter 14 The Group 3A Elements The...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
89 Chapter 14 The Group 3A Elements The sections and subsections of this chapter are listed below. 14.1 Discovery and Isolation of the Elements Boron Aluminum Gallium Indium and Thallium 14.2 Fundamental Properties and the Network Hydrides, Oxides, Hydroxides, and Halides 14.3 Structural Aspects of Boron Chemistry Allotropes Borides Borates 14.4 Aluminum, Gallium, Indium, and Thallium Aluminum Metal and Alloys Alum Alumina Gallium, Indium, and Thallium Compounds 14.5 Selected Topic in Depth: Electron-Deficient Compounds Chapter 14 Objectives You should be able to: briefly state how and by whom the Group 3A elements were discovered rationalize the trends in radii, ionization energies, electron affinities, and electronegativities of the group with particular emphasis on the anomalies in these properties shown by the heavier elements describe the general nature of the group oxides, hydroxides, and halides list and briefly rationalize the ways in which boron is different from its heavier congeners list and briefly rationalize how the chemistry of the heavier Group 3A congeners is organized by the inert pair effect describe the relationship between the general chemical nature of the borides and their applications describe the general molecular nature and a few of the applications of ortho-, meta-, and perborates list and briefly rationalize several applications of aluminum and its alloys list and briefly rationalize several applications of alums and alumina describe the safety and health hazards that accompanied the discovery of the borohydrides describe the nature of three-center, two-electron bonds draw and rationalize semi-topological diagrams of the simple boranes represent and rationalize the preparations and major reactions of the boranes describe and represent several electron-deficient compounds other than the boranes
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
90 Solutions to Odd-Numbered Problems 14.1. (a) Gay-Lussac and Thénard's preparation of boron: 6K(s) + B 2 O 3 (s) ─Δ 2B(s) + 3K 2 O(s) (b) Wöhler's preparation of aluminum: AlCl 3 (s) + 3K(s) ─Δ Al(s) + 3KCl(s) 14.3. Turkish samples: AW = 0.2030(10.01294) + (0.7970)(11.00931) = 10.807u California samples: AW = (0.1910)(10.01294) + (0.8090)(11.00931) = 10.819u 14.5. 204 81 Tl ─β - 0 -1 e + 204 82 Pb 14.7. (a) Periodic law: (i) atomic radii increase whereas ionization energies, electronegativities, and (the magnitudes of) electron affinities generally decrease going down the group; (ii) all the elements have three valence electrons. (b) Uniqueness principle: (i) the B
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/06/2010 for the course CHEMISTRY CHM 3610 taught by Professor Dr.kavallieratos during the Spring '10 term at FIU.

Page1 / 7

Chapter14.June02 - Chapter 14 The Group 3A Elements The...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online