Teeth and bones are composed, to a first approximation, of calcium phosphate, Ca3(PO4)2(s). The Ksp for this salt is 1.3 1032 at 25 C. Calculate the concentration of calcium ion in a saturated solution of Ca3(PO4)2.

Chapter 7—Sections 7.1-7.3 Section 7.1 v The VSPER Model • VSPER model: The electron pairs in a valance shell of the atom repel each other. Since they repel each other, they will also transform into different shapes from doing so. • Electron domain (pair): a lone pair or a bond of electrons (double or single dot on lewis structure). • There are a variety of shapes the molecules can take on. - 2 bonds: linear - 3 bonds: trigonal planar - 4 bonds: tetrahedral or trigonal bipyramidal - 5 bonds: octahedral v Electron Domain Geometry and Molecular Geometry • Electron domain geometry: the way the electron domains are arranged around the central atom. • Bond angle: the angle betw