fluorine
The atomic number for a fluorine atom is 9, which indicates it has 9 protons in its nucleus.
Since the atom is electrically neutral, the number of electrons must be the same as the number of protons in the atom, which is the definition of atomic number. Therefore, there are 9 electrons.
There are 9 protons in this fluorine atom because the atomic number (9) represents the number of protons in an atom.
In an uncharged atom, the number of electrons is always equal to the atomic number, in this instance, 9.
An atom's atomic number gives us its number of protons. Fluorine's atomic number is 9. Thus, it has 9 protons.
An atom with an atomic number of 9 means it has 9 protons. The atomic mass of 19 indicates the total number of protons and neutrons in the nucleus, so if the atom has 9 protons, the remaining mass comes from neutrons (19-9=10 neutrons).
To find the atomic number, subtract the number of neutrons (5) from the mass number (9). The atomic number of the atom in question is 4.
The atomic number is 4
Symbol - F Atomic Number - 9 Mass Number - 19
The atomic number of a Fluorine (F) atom is 9, meaning it has 9 protons within its nucleus.
The atomic number of fluorine is 9. So there are 9 protons
Fluorine has 9 protons per atom: The number of protons per atom is by definition the atomic number of an element, and reference to a Periodic Table shows that the atomic number of fluorine is 9.