2006-09-21 06:16:16 · 8 answers · asked by Anonymous in Education & Reference ➔ Homework Help
A lot of places. Your science textbook, chemistry handbook, etc.
2006-09-21 06:19:38 · answer #1 · answered by j_son_06 5 · 0⤊ 0⤋
http://chemlab.pc.maricopa.edu/PERIODIC/periodic.html
Periodic Table first discovered in 1869 by Dmitry I. Mendeleyev 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 accross 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.
2006-09-21 13:17:22 · answer #2 · answered by god knows and sees else Yahoo 6 · 0⤊ 0⤋
it is called the periodic table of the elements. It should nto be too hard to find if you search on google or yahoo. It is a list of all the different atoms in our universe.
2006-09-21 13:18:18 · answer #3 · answered by s_e_e 4 · 0⤊ 0⤋
wikipedia.com
search for periodic table
2006-09-21 13:55:03 · answer #4 · answered by mminuyasha 3 · 0⤊ 0⤋
I would suggest trying a website like the one I have listed below for you. It has an explanation link for each of the elements on the right hand side of the webpage.
Hope this helps.
http://www.webelements.com/
2006-09-21 13:19:00 · answer #5 · answered by Hepialid 2 · 0⤊ 0⤋
just type in periodic table in yahoo...and it'll come up
2006-09-21 13:17:47 · answer #6 · answered by Advice Girl 2 · 0⤊ 0⤋
this site should help you. just scroll all the way dow the page till you find what you are looking for.
2006-09-21 13:32:23 · answer #7 · answered by sknygurl022002 2 · 0⤊ 0⤋
www.wikipedia.com
2006-09-21 13:37:00 · answer #8 · answered by CallMeDigitalBob 3 · 0⤊ 0⤋