Number of electrons involved in the reduction of Cr_(2)O_(7)^(2-) ion in acidic solution to Cr^(3+)is

Number of electrons involved in the reduction of Cr_(2)O_(7)^(2-) ion

1.	Number of electrons involved in the reduction of Cr_(2)O_(7)^(2-) ion in acidic solution to Cr^(3+)is
Answer» 3 4 2 6 Solution :`{:(Cr_(2)O_(7)^(-2)RARR, 2Cr^(3+)),(14H^(+),+7H_(2)O),(+6e^(-),):}`