14 magg 1913 anni - Henry Moseley:
Moseley played a big part in the modern periodic table.
He had a creative idea which was to use the
concept of subatomic particles to group the
elements. In his experiments, Moseley used
X-ray to find out the approximate wavelengths
of each element and gave them each a
correlated atomic number. Later on,
he regrouped these elements into a new
periodic table in order of their atomic number
and into groups which helped to clear some
inconsistencies found in previous tables.