The isotope with the longest half life (Rf-267) has the mass number 267.
Each isotope has a specific mass number.
For each isotope of Rf the number of neutrons is different.Number of neutrons = Mass number of an Rf isotope - 104
261 amu. ------- The most stable isotopes of rutherfordium are: - atomic mass of 265Rf: 265,116 700 - atomic mass of 267Rf: 267,121 530 Masses after IUPAC recommendations, 2009.
For each isotope the number of neutrons is different. Number of neutrons = Mass number of an isotope - 104
The number of neutrons is different for each isotope. Number of neutrons = Atomic mass of an isotope - 104
For each isotope of Rf the number of neutrons is different.Number of neutrons = Mass number of an Rf isotope - 104
The most stable isotopes of rutherfordium are: - atomic mass of 265Rf: 265,116 700 - atomic mass of 267Rf: 267,121 530 Masses after IUPAC recommendations, 2009.
The atomic number of rutherfordium is 104.
It contains 104 electrons/protons and 159 neutrons.
Atomic mass of an element is measured in atomic mass units (amu), and is usually only slightly higher than its atomic mass number (except for elements having many different isotopes). The mass of a neutron is 1.00866 amu and the mass of a proton is 1.00728 amu. The mass of electrons is so insignificant that they are ignored. The atomic mass of an atom with 56 neutrons and 43 protons is (56 x 1.00866 amu) + (43 x 1.00728 amu) = ~99.8 amu.
359 g Rf = 8,093.1023 rutherfordium atoms
Rutherfordium is an element. Its symbol is Rf. It was discovered in 1964. The element number is 104.
The most stable isotope is rutherfordiun 267; for other isotopes see at: http://en.wikipedia.org/wiki/Rutherfordium