Contributions of mendeleev to science

1. PRESENTED BY,
JILU MARY ANTONY
PHYSICAL SCIENCE
No: 23

2.  Dimitri Ivanovich Mendeleev was born on 8 th February
1834 in the village of verkhnie Aremzyani near Tobalk in
Siberia to Ivan Pavlovich and Maria Dimitrievna
Mendeleeva.
 In 1885,after graduation he became a science master of
the Simferopol gymnasium.
 Between 1859 and 1861, he worked on the capillarity of
liquids and the workings of the spectroscope
 In August 1861 he wrote his first book on the spectroscope

3. Dmitri Mendeleev in 1897

4.  In 1865 he became Doctor of Science for his
dissertation "On the Combinations of Water with
Alcohol".
 In 1882 he received Davy Medal and Copley Medal
from the royal society England
 Mendeleev also investigated the composition of
petroleum, and helped to found the first oil
refinery in Russia.
 In 1905, Mendeleev was elected a member of
the Royal Swedish Academy of Sciences

5.  Mendeleev wrote the definitive textbook of his
time: Principles of Chemistry (two volumes, 1868–
1870).
 As he attempted to classify the elements according to
their chemical properties, he noticed patterns that led
him to postulate his periodic table
 Unaware of the earlier work on periodic tables
going on in the 1860s, he made the following
table
 By adding additional elements following this pattern,
Dmitri developed his extended version of the
periodic table.

6. Cl 35.5 K 39 Ca 40
Br 80 Rb 85 Sr 88
I 127 Cs 133 Ba 137

7.  Mendeleev published his periodic table of all known
elements and predicted several new elements to complete
the table.
 Mendeleev has the distinction of accurately predicting of
the qualities of what he called ekasilicon, ekaaluminium
and ekaboron (germanium, gallium and scandium,
respectively).
 Mendeleev made other important contributions to
chemistry." Mendeleev was one of the founders, in 1869,
of the Russian Chemical Society.
 In an attempt at a chemical conception of the ether, he put
forward a hypothesis that there existed two inert chemical
elements of lesser atomic weight than hydrogen.

8.  Of these two proposed elements, he thought the lighter to
be an all-penetrating, all-pervasive gas, and the slightly
heavier one to be a proposed element, coronium.
 Mendeleev devoted much study and made important
contributions to the determination of the nature of such
indefinite compounds as solutions.
 In physical chemistry, he investigated the expansion of
liquids with heat, and devised a formula similar to Gay-
Lussac's law of the uniformity of the expansion of gases.

9.  Mendeleev is given credit for the introduction of
the metric system to the Russian Empire
 He invented pyrocollodion, a kind of smokeless
powder based on nitrocellulose.
 Mendeleev studied petroleum origin and concluded
hydrocarbons are abiogenic and form deep within
the earth

10.  Mendelevium, which is a synthetic chemical element
with the symbol Md (formerly Mv) and the atomic
number 101.
 It is a metallic radioactive transuranic element in the
actinide series, usually synthesized by bombarding
einsteinium with alpha particles
 A large lunar impact crater Mendeleev that is located
on the far side of the Moon, as seen from the Earth,
also bears the name of the scientist.
 Russian Academy of Sciences yearly awards since
1998 Mendeleev Golden Medal

11. Mendeleev Medal

12.  In Saint Petersburg his name was given to the
National Metrology Institute dealing with
establishing and supporting national and worldwide
standards for precise measurements
 In 1907, Mendeleev died at the age of 72 in Saint
Petersburg from influenza.