15. How does the valance electron configuration (entire last energy level configuration) relate to the number on the Periodic Table? Use the short hand notation in your group discussion.

he would use the colour black

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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