Atomic Mass: 18.998404
Atomic number of Fluorine is 9.Mass number of Fluorine is 19.
Fluorine (F), the isotope 19F.
Fluorine is a non metal element. Atomic mass number of it is 19.
It contains 10 protons and 10 electrons (no. of protons =no. of electrons in ground state) Number of neutrons=Mass number of element- number of protons =19-10 =9
Uranium is a non metal element. Atomic mass of it is 238.
If you asking what it is, it is potassium.
Rubidium is a metal element. Mass number of it is 85.
Sodium is a metal element. Mass number of it is 23.
According to the periodic table: F atomic number 9, atomic mass of 18.998403
The atomic number of an element is the number of protons in the nucleus of each atom of the element. Mass number is a property of a particular isotope of the element rather than of the element itself: The mass number is the sum of the numbers of protons and neutrons in the nucleus of each atom of the isotope.
Vanadium is a metal element. Mass number of it is 51.
Magnesium is a metal element. Mass number of it is 24.