Answers in Order:


  • 540nm (Green= 570…530nm)
  • Bromothymol blue in a neutral sol
  • copper(II) chloride dihydrate
  • chlorophyll
  • BaCl2 salt = Bright green fireworks
  • Boron Flame test produces green flame
  • Malachite
  • Be3Al2(SiO3)6, Cr3+ replacing a few Al3+ in octahedral sites is the green found in emerald gemstones 








Source: Taken from the March 2007 issue of Chem 13 News