discovered the periodic table
dedrick, nava, kevin ,Octavio
who created the first accepted periodic table
How did placing gaps where undiscovered elements might go make Mendeleev's table more acceptable?
It kept more groups aligned
what did mendeleev do for these undiscovered elements that later validated his ideas?
he predicted them.
what correction to the order of elements did henry moseley make to the periodic table?
atomic numbers and atomic mass
what do we now know is the reason for the repeating patterns of elements
because periodic means to repeat