Significant Figures in the development of the Periodic Table

He suggested that elements be arranged in “octaves”

because he noticed

that certain properties repeated every 8th element.

• Mendeleev

• Newlands

• Moseley

• SeaBorg

Known as the "Father of the Periodic Table", he organized the elelments according to atomic mass.

• Newlands

• Seaborg

• Mendeleev

• Lavoisier

This physicist arranged the Periodic Table into what we know today that is according to atomic number.

• Mendeleev

• Moseley

• Dobereiner

• Glenn Seaborg

He discovered 8 new elements and the Lanthinide and Actinide Series.

• Glenn Seaborg

• Lothar Meyer

• Dmitri Mendeleev

• Henry Moseley

Dmitri Mendeleev created a periodic table that had predictive value.

• True

• False

Elements on the Periodic Table are organized according to similar physical and chemical properties.

• False

• True