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Sedaia [141]
3 years ago
13

When Mendeleev organized the elements by their _________, he noticed the properties of elements repeated.

Chemistry
1 answer:
Mama L [17]3 years ago
4 0
I believe it should be when he arranged the elements by their atomic mass.
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What are the number of protons, neutrons, and electrons in an atom of Tellurium- 129?
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Explanation:

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2 years ago
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An acid is:
agasfer [191]
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