Isotopes. Iso = same, as in the # of protons. Radioisotope is more accurate.
Carbon is a non metal element. Mass number of it is 12.
The atomic number of any carbon isotope is 6, the number of protons in the nucleus of any carbon atom, irrespective of its mass number.
A carbon 12 atom has a mass defect of .098931 u. This number, the mass defect, represents the binding energy of the nucleus of the nucleus of the atom, and how energy has to be used to split this nucleus.
Carbon is a non metal element. Mass number of it is 12.
The atomic mass number of an atom, if the atom's mass number is approximately equal to 0.33 that of carbon-12, would be 4. If the question is about actual masses rather than mass numbers, the mass of a helium-4 atom is about 4.00260 atomic mass units, while the mass of a carbon-12 atom is, by definition, exactly 12.000..... atomic mass units.
one gram of carbon* Avogdo's number =number of atom (many atom) one atom of carbon mean carbon have a 6 electron and 12 molar mass
neutrons, subtract the atomic number from the mass number to find the number of neutrons, atomic number is the number is the amount of protons, atomic mass is the average mass of one mole of atoms. each particle wieghing one amu (atomic mass unit)
An atom of carbon-12 has a mass of exactly 12 atomic mass units. This is now the standard.
H has a mass number of 1 (one proton, no neutrons), Carbon has a mass number of 12 (6 neutrons, 6 protons) and O has a mass number of 16 (8 neutrons and 8 protons).
To the find the mass number of an atom you add the protons and neutrons. Meaning that the mass number of this atom is 12.
12
One atom of Carbon-12 (6p+ and 6n0) is assigned a mass of 12 uv