The oxidation states of transition metal atoms inK2Cr2O7,KMnO4andK2FeO4, respectively, are x,yandz. The sum of x,yandz is
Step 1: Identify transitional metal in given compounds
Step 2: Compute the oxidation state of transitional atoms
Step 3: Compute the sum of x,yandz
Hence, the sum of x,yandz is 19.