Fluorine is a non metal element. Atomic Mass number of it is 19.
Fluorine is an element, not an atom. An atom is the smallest unit of an element that retains its chemical properties, while an element is a substance made up of only one type of atom. Fluorine is a chemical element with the symbol F and atomic number 9.
19.0
The unit for the atomic masses (and also for atomic weights) is the unified atomic mass unit equivalen to to 1/12 of the atomic mass of the carbon isotope carbon-12 in normal state or 1,660 538 921(73)×10−27 kg.
Both argon and cobalt have this characteristic.
Yes, an element has mass. The smallest unit of an element is the atom, and the atom's mass is the amount of matter in it: the neutron(s), proton(s), and electron(s). Because the number of protons determines an element's identity, and protons have mass, elements always have mass (though this can be a tiny, almost immeasurable mass).
Mass
At the bottom, the atomic number is at the top.
Only protons and neutrons have 1 unit mass each, which form the nucleus. The Electrons that orbit the nucleus are of negligable mass. Therefore; total mass = 9 protons + 10 neutrons = 19 unit mass.
The average mass of one atom of an element is given by its atomic mass, which is listed on the periodic table in atomic mass units (amu). It represents the average mass of all isotopes of that element, taking into account their relative abundance.
The unit of atomic mass for aluminum is atomic mass unit (amu) or unified atomic mass unit (u).
B. The name of the element does not change during beta decay. The atomic number (Z) increases by one unit as a neutron is converted to a proton, while the mass number (A) remains the same.
Aluminium is a meta element. Atomic mass of it is 27.