Card Set Information
How do you determine the number of protons an atom has?
how do you determine the number of electrons an atom has?
same as protons
how do you determine the number of neutrons an atom has?
mass number - protons
What does the period number of an atom tell us about the structure of the atom?
number of shells
what clues does the group number give us about the structure of the atom?
number of valence electrons