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It is a compound, it has no valency. The Cr in it has a valency of +7
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoOverall the anion has an oxidation number of -2, the same as its charge. The Cr is +6 and the O are all -2.
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What is the oxidation number for Cr in Cr2O7-2?
6+
Symbol valancy for nitride?
Symbol of nitride is N and its valency is 3
What is the valancy of brelium?
valency= 2 electrons valency= 2 electrons
Structure of cr2o7-2?
dichromate ion
Symbol for dichromate?
Potassium chromate is K2CrO4 Potassium dichromate is K2Cr2O7
When did Isabella Valancy Crawford die?
Isabella Valancy Crawford died on 1887-02-12.
When was Isabella Valancy Crawford born?
Isabella Valancy Crawford was born on 1850-12-25.
What is the correct charge in Mn cr207 3?
Mn ions are +2 charged. Cr2O7 is -2 charged. So the total charge of (Cr2O7)3^-2 is -6. So Mn(Cr2O7)3 is -4 charged.
Formula for dichromate?
Cr2O7 2-
What is the valancy for vanadium?
Could vary from 1 to 5 in its compounds.
What is the valancy of ammonium?
The valency of an ammonium ion is 1 (positive).
What is the oxidation number for Cr in Cr2O7-2?
6+
What are the names of these polyatomic anions MnO4 and O2 2 and CrO4 2 and Cr2O7 2?
MnO4- : Manganate O2- : Oxide CrO4 2- : Chromate Cr2O7 2- : Dichromate
Symbol valancy for nitride?
Symbol of nitride is N and its valency is 3
What is the valancy of brelium?
valency= 2 electrons valency= 2 electrons
What is the valancy of bismuth?
2, 8, 18, 32, 18, 5
What is the formula for iron 3 dichromate?
Fe2(Cr2O7)3
