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Completion Complefe each statement. 1. Planck determined that energy emitted as light by a beated solid occurs in discrete units, called 2. In sulfur hexafluoride, SF4,6 pairs of bonding electrons are present, resulting in a molecule with a( (i) shape. 3. The series of elementary steps that make up an overall reaction is called the 4. When an element is in its most stable form at 25C and 100kPa it is said to be in its 5. For the reaction represented by the equation 2HgO(s)2Hg(J)+O2(g), the rate of appearance of mereury metal is the rate of appearnec of oxygen gas. 6. If the concentration of H2O is 107mol, the pH will be