Deduce the formula of ammonium dichromate and take N = -3 (as NH4+) and O = -2. What is the sum of the oxidation numbers of all N atoms and all Cr atoms in one formula unit?

JEE Advanced levelSingle correct optionDifficulty 3 of 3bn212

Deduce the formula of ammonium dichromate and take N = $- 3$ (as $NH X_{4} X^{+}$ ) and O = $- 2$ . What is the sum of the oxidation numbers of all N atoms and all Cr atoms in one formula unit?

(NH X_{4}) X_{2} Cr X_{2} O X_{7}

: N total

= 2 (- 3) = - 6

. Cr:

2 x + 7 (- 2) = - 2

x = + 6

, total

= 12

. Sum

= 6