Na2Cr2O7
The chemical formula for sodium dichromate is Na2Cr2O7.
The formula for sodium dicromate is Na2Cr2O7
The compound with the formula Na2CrO4 is called sodium chromate. It is a yellow crystalline solid that is commonly used in industrial processes such as producing pigments and as a corrosion inhibitor.
sodium dicromate
Sodium chromate, a yellow crystalline solid, is the chemical compound Na2CrO4. Its hydrated form, Na2CrO4·3H2O, contains three molecules of water per molecule of sodium chromate. This compound is water-soluble and is commonly used in laboratory applications.
That would be the bichromate or sometimes called the dichromate ion. Example: Sodium bichromate (or sodium dichromate) is Na2Cr2O7.
The formula is potassium dichromate.
Sodium dichromate has the chemical formula of Na2Cr2O7. The reaction with HNO3 is balanced as 2 HNO3 + Na2Cr2O7 = H2Cr2O7 + 2 NaNO3.
The chemical formula (NH4)2Cr2O7 is for ammonium dichromate.
No: Sodium dichromate contains no carbon and therefore can not be organic by the usual definitions.
It's name is "barium dichromate". Some people also use the antiquated (and wrong) term "bichromate", which should no longer be used. (See also the provided link.)
CdCr2O7