...hello guys can i ask you,smethng?who's Dmitri Mendeeler?and what is a PERIODICTABLE?I want a complete answr

Question

....i'd like the complete answer coze i need this for my assgnment,,,pls...pls..pls??!!help me!thanks for your kindness...mwuahugs!! ( if not wrong it's about elements..)

Answer 1

Dmitri Mendeleev is the Russian chemist who devised the first peroidic table. He was so good, he even predicted 3 elements in it that, at that time, were not yet discovered, along with their chemical and physical properties.

The periodic table is simply the list of all the chemical elements, grouped together is a manner that, when seen horizontally, they are arranged in increasing atomic number (number of protons in its nucleus). Vertically, the elements are grouped together by similar chemical and physical properties...

This is as complete and as simple as I can give you. The rest of it are simply minute details that will not really enhance the answer by that much.

Answer 2

Periodic Table first discovered in 1869 by Dmitri I. Mendeleev is a way of presenting all the elements so as to show their similarities and differences. The elements are arranged in increasing order of atomic number(Z) as you go from left to right across the table. The horizontal rows a called periods and the vertical rows, groups.
A noble gas is found at the right hand side of each period. There is a progression from metals to non-metals across each period. Elements found in groups (e.g. alkali, halogens) have a similar electronic configuration. The number of electrons in outer shell is the same as the number of the group (e.g. lithium 2·1).
The block of elements between groups II and III are called transition metals. These are similar in many ways; they produce colored compounds, have variable valency and are often used as catalysts. Elements 58 to 71 are known as lanthanide or rare earth elements. These elements are found on earth in only very small amounts.
Elements 90 to 103 are known as the actinide elements. They include most of the will known elements which are found in nuclear reactions. The elements with larger atomic numbers than 92 do not occur naturally. They have all been produced artificially by bombarding other elements with particles.

Answer 3

Well, I think you can get all that you need at

http://en.wikipedia.org/wiki/Periodic_table
Periodic table - Wikipedia, the free encyclopedia

Answer 4

hi frnd
what do u mean by complete answer
ur frnd
Akshay
Bye............!!!!!!!!!!