There are 4 protons in 9Be. All isotopes and ions of the same elements will have the same number of protons regardless of the difference in the number of neutrons or electrons. So the information about which isotope is (by saying Be-9) is unneeded.
Beryllium has the atomic number 4, so it always has 4 protons, regardless of the isotope.
An atom of Be9 has 4 protons
Nine
Flourine has 9 protons and this number is independent of the charge on the atom
There are 9 protons and 9 electrons in a fluorine atom The only stable isotope has 10 neutrons
9 protons and 10 neutrons in F-19 isotope.
The hydroxide ion is OH-. There is one proton in a hydrogen atom and eight in an oxygen atom. Therefore, there are 9 protons in a hydroxide ion.
Fluorine, F, has the atomic number 9. Atomic number is the number of protons, so fluorine atoms have 9 protons in their nuclei. In a neutral atom, the number of protons and electrons are equal. So a neutral F atom will have 9 electrons.
9 protons and 9 neutrons are present in F-18 atom
9
Beryllium has four protons. Be9 also has five neutrons, for a total mass of 9.
Fluorine has 9 protons.
The atomic number of fluorine is 9. So there are 9 protons
There are 9 protons in the element fluorine.
Each fluorine atom has 9 protons.
9
Flourine has 9 protons and this number is independent of the charge on the atom
An atom with an atomic number of 9 has 9 protons; that's what the atomic number is, it tells you the number of protons in the nucleus.
There are 9 protons and 9 electrons in a fluorine atom The only stable isotope has 10 neutrons
An atom's atomic number gives its number of protons. Fluorine's atomic number is 9. Thus, fluorine has 9 protons.