Isotopes : Isotopes Atoms of the same element with different masses
Same number of protons & electrons
***Different number of neutrons
All isotopes of cobalt have
27 p+ and 27 e-
Atomic Mass : Atomic Mass On the periodic table, the mass is a weighted average of ALL existing isotopes.
Isotopes : Isotopes Isotopes have a specific mass number
Can be written two ways to show the mass:
Name notation: Cobalt-58, Cobalt-59
Symbol notation: 58Co, 59Co
Finding the particles : Finding the particles Protons and electrons are still the same as the atomic number
Atomic number 27
27p+ and 27 e-
Neutrons are found WITHOUT the periodic table.
Isotope mass number – atomic number
58 minus 27= 31 neutrons