The Periodic Element (876 words, 3 pages)
13.1 Periodic trends Na- Ar (the third period) 13.1.1 (This seems very much like the last bit of SL, but now with explanations ) Elements on the left are metallic...right are non-metals...Al is a metalloid (semi-metal). Oxides Non-metals - Acidic oxides , Metals - Basic oxides, Metalloids - Amphoteric (both ...
Read More