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).
Phosphorus trichloride is a chemical compound of phosphorus and chlorine, having the chemical formula PCl3. It has a trigonal pyramidal shape. It is the most important of the three phosphorus chlorides.
Published on Aug 27, 2013. A step-by-step explanation of how to draw the CH2Cl2 Lewis Dot Structure (Dichloromethane). Carbon (C) is the least electronegative atom and goes in the center of the CH2Cl2 Lewis structure. Hydrogen (H) atoms always go on the outside of a Lewis structure.