the atomic number of Florine is 9 and it has 10 neutrons. What is its mass?
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The number of neutrons is obtain through the difference of the mass number and the number of electrons.
Explanation:
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, minutes 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine.
ans :- 19
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