Periodic Table

Problem #1: Explain the following observations. a) In2O is more basic than In2O3 b) pi bonds exist between two nitrogen atoms but not between two phosphorus atoms c) Lithium salts are more readily soluble in polar organic solvents (ethanol, acetone) than in water

Periodic Table

Nearly every compound of silicon has this element in the +4 oxidation state. In contrast, most compounds of lead have this element in the +2 oxidation state. a) What general trend of the oxidation states does this observation illustrate? b) What could you suggest as an explanation for this observation?

hydrolysis of lidocaine

new structure of lidocaine with the two molecules produced and its new functional groups after hydrolysis

Molecular Structure / Bonding

3.1 Write Lewis electron dot structures for (a) GeCI3-, (b) FC02- (c) CO32-, (d) AICI4-, and (e) FNO. Where more than one resonance structure is important, give examples of all major contributors. 3.2 Construct Lewis structures of typical resonance contributions of (a) ONC- and (b) NCO- and assign formal charges to each atom. Which resonance structure is likely to be the dominant contribution in each case? 3.3 (a) Write Lewis structures for the major resonance forms of N02-. (b) Assign formal charges. (c) Assign oxidation numbers to the atoms. (d) Describe whether oxidation numbers or formal charges are appropriate for the following applications: (i) predominant resonance Lewis dot str... click for more

Simple Solids - Structures

2.2 Draw one layer of close-packed spheres. On this layer mark the positions of the centers of the B layer atoms using the symbol X and, with the symbol O mark the positions of the centers of the C layer atoms of an fcc lattice. 2.8 Consider the structure of rock salt. (a) What are the coordination numbers of the anion and cation? (b) How many Na+ ions occupy second-nearest neighbor locations of an Na+ ion? (c) Pick out the closest-packed plane of CI- ions. (Hint: this hexagonal plane will be perpendicular to a threefold axis). 2.9 Consider the structure of cesium chloride. (a) What is the coordination number of the anion and cation? (b) How many Cs+ ions occupy second-nearest neighbor... click for more