Sodium Thiosulfate (Na2S203) - Sodium thiosulfate is a colorless, transparent monoclinic crystal widely used by utilities for dechlorination. Learn about the Physical and Chemical Properties of Sodium Thiosulfate along with its Uses. Answer: The correct answer is: None of the above are exothermic. Explanation: Energy is the ability to perform a job or to produce heat. Chemical reactions involve a rearrangement of atoms between substances with rupture or formation of chemical bonds and this generates changes in the energy of the system.
Problem: Answer the questions below about the shape of the orthotellurate (TeO 66-) anion. How many electron groups are around the central tellurium atom? What phrase best describes the arrangement of these electron groups around the central tellurium atom?