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BARSIC [14]
3 years ago
8

PLS HELP THIS IS TO HARD PLS

Chemistry
1 answer:
lions [1.4K]3 years ago
7 0
The correct answer is D because they are all in the same group and all elements in the same groups as each other are always very similar.
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An unkown element has been found to occur in two different stable isotopes. One isotope has an abundance of 57.21 percent and ha
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