What is the coefficients of `I_(2)` (s) when the reaction below is balanced with smallest whole number coefficients? ____`Cr_2O_

What is the coefficients of `I_(2)` (s) when the reaction below is balanced with smallest whole number coefficients?
____`Cr_2O_(7)^(2-)(aq)+"____" .^(-)(aq)+"____"H^(+)(aq)to"_____"I_(2)(s)+"___"Cr^(3+)(aq)+"___"H_(2)O(l)`
A. 2
B. 3
C. 4
D. 6

What is the coefficients of `I_(2)` (s) when the reaction below is balanced with smallest whole number coefficients? ____`Cr_2O_(7)^(2-)(aq)+"____" .^

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