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sertanlavr [38]
3 years ago
15

An atom of an element contains 9 protons. Which element is it?

Chemistry
1 answer:
lina2011 [118]3 years ago
3 0

Fluorine

Explanation:

By looking at the periodic table, you will see that Fluorine has 9 protons. Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine.

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