Yellow to red-orange (depending on anion and charge of Fe); in rare cases, can form complex ion with a deep blue color
yellow-green (depending on the anion)
orange-red (depending on the anion)
Violet (Cr(NO3)3 to Green (CrCl3)
Purple (Mn w/ +7 oxidation state is purple)
Dark Blue; produced when ammonia is added to Cu2+ solutions
Red-brown, Wine-red to dark orange
Al, K, Li, Mg, Na, Ca, Ba, Sr, Zn
colorless aqueous ions and most of their solid salts are white.
Transition element ions with partially filled d orbitals
tend to release colored light.
blue-green (Pb2+ and Pb4+ are colorless)
Blue (Co2+ with HCl will form a CoCl42- complex that is blue)
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