Periodic table – Group 1 The alkali metals have a silvery, shiny surface when they are first cut. However, this goes dull very quickly as the metals reacts with the oxygen in the air. e.g. sodium + oxygen sodium oxide 4Na(s) + O2(g) 2Na2O(s) Lithium, sodium and pota...
For example, as you move across a row, elements go from metallic to less metallic. When you finish a row, the next row repeats those properties. Just like the seasons repeat themselves year after year. The periodic table also has COLUMNS. They are called: MORE about the P.T. ! What a...
We investigated how often the seven known cell-cycle motifs occurred in the upstream region of genes detected as periodically expressed. Results for τ = 0.95 are shown in Table1. None of the cell-cycle motifs were overrepresented incdc15and cell-cycle motifs CCA and SWI5 were clearly not ov...