Arrange the gases in increasing order of the number of atoms that make up its molecule from left to right. CH4 CO2 C2H2 Br2. For a given element, in which state of potential energy would you expect to have (a) the greatest and (b) the least amount of potential energy? Explain you answers in terms of the chemical energy holding atoms together.

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

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