The chemist Dmitri Mendeleev died at the age of 72. Here is all you want to know, and more!
Biography - A Short Wiki
Russian scientist who revolutionized chemistry with his Periodic Table of Elements. His chart predicted certain elements that were not discovered yet, but have been discovered since.
He was born in Siberia as the youngest of 14 children. He was married to his second wife Anna Ivanova Popova from 1882 until his death in 1907.
Quotes
"No one nor anything can silence me.
"There is nothing in this world that I fear to say.
"I want you to have this feeling too – it is my moral responsibility to help you achieve this inner freedom.
"It is the function of science to discover the existence of a general reign of order in nature and to find the causes governing this order. And this refers in equal measure to the relations of man – social and political – and to the entire universe as a whole.
"Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).