What causes the lines in the spectrum for elements

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What causes the lines in the spectrum for elements

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Amity 3 years 2021-09-04T16:37:37+00:00 1 Answers 7 views 0

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  1. thachthao
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    2021-09-04T16:39:00+00:00
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    They have to connect atoms to cause a chemical reaction

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