Teachers. About Us. Contact Us. There are three types of rock. 1. Igneous: these are rocks that solidified directly from molten silicates, which geologists call magma. Examples are: granite, basalt, pumice and flint (which is a form of quartz).2.eachers. About Us. Contact Us. There are three types of rock. 1. Igneous: these are rocks that solidified directly from molten silicates, which geologists call magma. Examples are: granite, basalt, pumice and flint (which is a form of quartz).
Click and drag the molecle to rotate it. The molecular geometry of PCl3 is trigonal pyramidal with asymmetric charge distribution on the central atom. Therefore this molecule is polar. Phosphorus Trichloride on Wikipedia. Back to Molecular Geometries & Polarity Tutorial: Molecular Geometry & Polarity Tutorial.
Lewis Structures of Ionic Compounds. The Lewis Structure (electron dot diagram) of each ion is used to construct the Lewis Structure (electron dot diagram) for the ionic compound. The Lewis structure of a positive ion (cation) is positioned adjacent to the Lewis structure of a negative ion (anion).