Hi guys. I have to do a little written report about Periodic table and I have to write either about Groups, Periods or Transition elements. I have decided to write about Periods. First I wrote what a periodic table is and how it is formed (just a little histry) then I explained the order of arrangement. I have to include some other important features to make another 150-200 Words. I have explained that they are Reductants from left and they become Oxidants towards right. Can someone give me other details such as similarities and diffrences or provide a link that I could read. Thank you in advance!