The dichromate ion has the charge -2.
+4 valency
In an acidic solution chromate ions are converted into dichromate ions.
MgCr2O7
Silver dichromate
valency of dichromate in potassium dichromate
The dichromate ion has the charge -2.
The chemical name is, potassium dichromate. It is orange in colour. Dichromate ion gives colour for this compound.
That would be the bichromate or sometimes called the dichromate ion. Example: Sodium bichromate (or sodium dichromate) is Na2Cr2O7.
Na2Cr2O7 (the formula is not Na2CrO7) is sodium dichromate. Na2CrO4 is sodium chromate.
potassium dichromate (PDC)
The name for K2Cr2O7 is potassium dichromate.
The dichromate ion is Cr2O7-2. Ammonium dichromate is two ammonium ions and one dichromate ion (to balance charges- ammonium has a +1 charge and dichromate has a -2 charge): (NH4)2Cr2O7. Therefore, ammonium dichromate would contain 7 oxygen atoms.
The chemical formula of potassium dichromate is K2Cr2O7
dichromate ion
Potassium chromate is K2CrO4 Potassium dichromate is K2Cr2O7
The name of SnCrO4 is Tin II Chromate or stannous chromate.