SEMINAR TOPIC

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THE AMERICAN COLLEGE:

THE AMERICAN COLLEGE

SEMINAR TOPIC PERIODIC TABLE:

SEMINAR TOPIC PERIODIC TABLE VIGNESH KUMAR.B 11 BOT 19 THE AMERICAN COLLEGE,MADURAI.

DMITRI MENDELEEV PERIODIC TABLE:

DMITRI MENDELEEV PERIODIC TABLE DMITRI MENDELEEV BORN- 8 February 1834 on Verkhnie Aremzyani, Russian Empire DIED-2 February 1907 (aged 72 ) on St. Petersburg, Russian Empire Nationality-Russian Fields-Chemistry , physics and adjacent fields Alma mater Saint Petersburg University He was a Russian chemist and inventor. He formulated the Periodic Law

EARLY LIFE MENDELEEV :

EARLY LIFE MENDELEEV His father was a teacher of fine arts, politics and philosophy. His father became blind and lost his teaching position. His mother was forced to work. Mendeleev attended the Gymnasium in Tobolsk . In 1849, his mother took Mendeleev across the entire state of Russia from Siberia to Moscow with the aim of getting Mendeleev a higher education. The university in Moscow did not accept him. The mother and son continued to St. Petersburg to the father’s alma mater(school).

LATER LIFE DMITRI MENDELEEV:

LATER LIFE DMITRI MENDELEEV Between 1859 and 1861, he worked on the capillarity of liquids and the workings of the spectroscope in Heidelberg. In late August 1861 he wrote his first book on the spectroscope. On 4 April 1862 he became engaged to Feozva Nikitichna Leshcheva , and they married on 27 April 1862 at Nikolayev Engineering Institute's church in Saint Petersburg (where he taught).[7] Mendeleev became a professor at the Saint Petersburg Technological Institute and Saint Petersburg State University in 1864 and 1865, respectively.

PERIODIC TABLE:

PERIODIC TABLE Mendeleev's 1871 periodic table. On 6 March 1869, Mendeleev made a formal presentation to the Russian Chemical Society. The periodic table arranged by the molecule atomic weight.

PERIODIC TABLE:

PERIODIC TABLE The standard form of the table comprises an 18-column-by-7-row main grid of elements, with a double row of elements below. The table can also be deconstructed into four rectangular blocks: the s-block to the left, the p-block to the right, the d-block in the middle, and the f-block below that. The rows of the table are called periods; the columns are called groups, with some of these having names such as halogens or noble gases.

THE MENDELEEV’S MODIFIED PERIODIC TABLE CONSISTS OF::

THE MENDELEEV’S MODIFIED PERIODIC TABLE CONSISTS OF: Nine vertical columns called groups. These are numbered from I to VIII and zero. (The members of zero group were not discovered at the time of Mendeleev). Each group from I to VII is further sub-divided into two sub-groups designated as A and B. Group VIII consists of three sets, each one containing three elements. Group zero consists of inert gases . (2) Seven horizontal rows, called periods. These are numbered from 1 to 7. First period contains two elements. Second and third periods contain eight elements each. These periods are called short periods. Fourth and fifth contains eighteen elements each. These periods are called long periods . Sixth period contains thirty two elements and is called longest period . Seventh period is incomplete and contains nineteen elements according to early classification.

A diagram of the periodic table, highlighting the different blocks:

A diagram of the periodic table, highlighting the different blocks

Periodic table trends. Arrows point at increase.:

Periodic table trends. Arrows point at increase.

REFERENCES:

REFERENCES ORGANIC CHEMISTRY DPM LIBRARY REFERENCE SECTION 540. http://en.wikipedia.org/w/index.php?title=Special:Book&bookcmd=download&collection_id=139820d288d71cc4&writer=rl&return_to=Periodic+table. MODERN BIOLOGY ( John H. Postlethwait Janet L. Hopson) Printed in the United States of America ISBN 0-03-065178-6 2 3 4 5 6 7 8 048 08 07 06 05

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MY SPECIAL THANKS:

MY SPECIAL THANKS GC. ABRAHAM SIR FOR GAVE THIS CHANCE TO ME. I AM SAYING HEARTFULL THANKS TO GCA SIR AND MY FRIENDS THOSE CAME FOR THIS SEMINAR AND HEAR MY VOICE. THIS IS MY FIRST SEMINAR .SO, I MAY MADE SOME WRONG . PLEASE FORGIVE ME. THANKS

THE AMERICAN COLLEGE:

THE AMERICAN COLLEGE

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