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crimeas [40]
3 years ago
10

What is the mass notation number of an atom that has 9 protons, 11 neutrons, and 9 electrons?

Chemistry
1 answer:
adoni [48]3 years ago
6 0

Answer:

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.

Explanation:

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