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Law Incorporation [45]
2 years ago
15

What is the correct answer and why?

Chemistry
1 answer:
MariettaO [177]2 years ago
7 0
A) number of neutrons in the nucleus... all isotopes of an element contain the same number of protons which is equal to that elements atomic number...
hope this helps!
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To calculate the mean, you add up all of the data values, and then divide that sum by the *number* of values.

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Answer:

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2 years ago
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