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An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.
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Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17
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What name is assigned to these types of atoms that have an atomic number of 31...
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