Product Notes
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The melting/boiling point of transition metals are usually higher compared to the alkali metals, alkaline earth metals, and nonmetals, which is why the range of elements compared to chromium differed between comparisons
Most common oxidation states of chromium are in bold. The right column lists a representative compound for each oxidation state.
Any color of corundum (disregarding red) is known as a sapphire. If the corundum is red, then it is a ruby. Sapphires are not required to be blue corundum crystals, as sapphires can be other colors such as yellow and purple .
in corundum (aluminium oxide, Al2O3), pink sapphire or ruby is formed, depending on the amount of chromium. The melting/boiling point of transition metals are usually higher compared to the alkali metals, alkaline earth metals, and nonmetals, which is why the range of elements compared to chromium differed between comparisons
Most common oxidation states of chromium are in bold. The right column lists a representative compound for each oxidation state.
Any color of corundum (disregarding red) is known as a sapphire. If the corundum is red, then it is a ruby. Sapphires are not required to be blue corundum crystals, as sapphires can be other colors such as yellow and purple
When Cr3+
replaces Al3+
in corundum (aluminium oxide, Al2O3), pink sapphire or ruby is formed, depending on the amount of chromium.
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