More info about atomic number: http://gened.emc.maricopa.edu/bio/bio181/BIOBK/BioBookCHEM1.html#Atoms

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atomic number characteristic of atom
atomic number SAME AS número atómico
atomic number double to obtain approximate atomic weight
atomic number has example 1
atomic number has example 6
atomic number has example 7
atomic number has example 15
atomic number has example 16
atomic number has example 8
atomic number specifies # of neutrons
atomic number specifies # of protons
atomic number specifies # of electrons
atomic number has exception hydrogen w no neutron
atomic number information provided in periodic table