Answer :
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:
As seen in the periodic table fluorine has 9 protons and
9 electrons as number of protons are equal to the
number of electrons. The mass notation number of
fluorine having 11 neutrons is 20.
What is mass notation number?
- Mass number (A) = number of protons + number of electrons
- An atom has electrons, protons, and neutrons.
- Protons and neutrons reside in the nucleus of an atom, and they, in together, are called nucleons.
- The number of nucleons present in an atom is called mass number.
- Mass number is responsible for the mass of an atom or atomic mass.
- Since protons and neutrons are heavier than electrons,
- The mass of an atom is estimated by the number of protons and the number of neutrons.
What is the atomic number of fluorine?
The atomic number of fluorine is 9.
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