Question

state the valency and name the element of Cr2O7​

Answer 1

$\large \textbf \color{blue}☆ANSWER☆$

Potassium di chromate formula=K2cr2O7

Dichromate ion is Cr2O7(2-) So its valency is 2 and oxidation state of Cr is +6 its important compound is K2cr2O7.

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Answer 2

Potassium di chromate formula=K2cr2O7

Dichromate ion is Cr2O7(2-) So its valency is 2 and oxidation state of Cr is +6 its important compound is K2cr2O7.