The number of electrons, protons, and neutrons in the atom are:
Number of electrons = 9
Number of protons = 9
Number of neutrons = 11
The number of additional electron needed is 1
The correct answer to the question is Option C. 9 electrons, 9 protons, 11 neutrons; 1 additional electron is needed to completely fill the outer shell of this atom
Fluorine is a member of the group 17 element called Halogens. They have 7 valence electrons.
NOTE: The nucleus contains the neutrons and the protons while the electrons revolve around the nucleus.
From the diagram given above, the following data were obtained:
Number of electrons = 9
Number of protons = 9
Number of neutrons = 11
Valence electron = 7
Now, we can see that the fluorine atom has 7 valence electrons. Thus, fluorine atom will require 1 electron to complete its outermost shell.
Thus, the correct answer to the question is Option C. 9 electrons, 9 protons, 11 neutrons; 1 additional electron is needed to completely fill the outer shell of this atom
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