The weight (mass) of an atom with 9 protons will vary depending on the number of neutrons. 9 protons defines the atom as fluorine (F), and it can have 10 protons, making the mass 19 amu, or it can have a mass of 14 amu up to 31 amu, but the only stable isotope is the one with a weight (Atomic Mass) of 19 amu.
The number of protons and neutrons controls the weight of an atom.
The total weight of the protons and the neutrons.
Flourine has 9 protons and this number is independent of the charge on the atom
Boron, Symbol= B Atomic Weight= 10.811
there are 19 protons in a fluorine-19 atom. Ironic huh? There are 9 protons in the fluorine 19 nucleus. There are 10 neutrons. The atomic number of fluorine is 9, which is the number of protons in a nucleus. The isotope number is the total number of protons and neutrons. The number of neutrons is different between fluorine 18 and 19 (9 and 10 respectively). They both have 9 protons.
The atomic number of fluorine is 9. So there are 9 protons
There are 9 protons in the element fluorine.
An atom's atomic number gives us its number of protons. Fluorine's atomic number is 9. Thus, it has 9 protons.
The number of protons and neutrons controls the weight of an atom.
There are 9 protons in this fluorine atom because the atomic number (9) represents the number of protons in an atom.
9
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).
Fluorine has 9 protons.
Each fluorine atom has 9 protons.
There will be 9 protons in a fluorine atom, but actually, there exists only fluorine-19.
9
The total weight of the protons and the neutrons.