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Chemistry, 29.08.2019 15:20, aalyssag606
Which element is found in nature only in compounds? a. sodium b. helium c. oxygen d. nitrogen
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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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Which element is found in nature only in compounds? a. sodium b. helium c. oxygen d. nitrogen...
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