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What element forms an ion with an electronic configuration of [ Kr ] [Kr] and a − 2 −2 charge? element symbol:
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Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?
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In a system, when potential energy decreases, then entropy also decreases. true false
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Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity
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What element forms an ion with an electronic configuration of [ Kr ] [Kr] and a − 2 −2 charge? eleme...
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