Atomic number of Fluorine is 9.Mass number of Fluorine is 19.
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Atomic mass number of it is 19.
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Mass number of it is 19.
Atomic number of Fluorine is 9.Mass number of Fluorine is 19.
The mass number of fluorine-19 is 18.998404 amu.
Fluorine is a non metal element. Atomic mass of it is 19.
Atomic number of Fluorine is 9.Mass number of Fluorine is 19.
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Atomic mass number of it is 19.
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Atomic mass number of it is 19.
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Atomic mass of it is 19.
Fluorine is a non metal element. Atomic mass of it is 19.
The answer is Fluorine!Argon, one of the noble gases.