M

Jean Charles Galissard de Marignac (1817-1894)

Born in Switzerland.
He determined the atomic weights of 28 elements.
He extracted ytterbia.
He found gadolinium and samarium in samarskite earths.
He discovered the composition of silicic acid.
He carried out researches on the nature and the process of solution.
Dmitry Ivanovich Mendeleyev (1834-1907)

Born in Siberia.
He discovered periodicity of elements.
He compiled the first periodic table.
Victor Meyer (1848-1897)

Born in Germany.
He researched stereochemistry.
He researched thiopene, oximes, and iodine.
He researched methods of vapour density determinations.
Thomas Midgley (1889-1944)

Born in United States.
He discovered tetraethyllead and antiknock treatment for gasoline.
He discovered fluorocarbon refrigerants.
Henri Moisson (1852-1907)

Born in France.
He isolated fluorine.
He developed the electric furnace for making carbides and for preparing pure metals.
He was awarded the Nobel Prize in chemistry in 1906.
Henry G. J. Moseley (1887-1915)

Born in England.
He discovered the relationship between frequency of X-rays emitted by an element and its atomic number.