How many electrons are removed from Cr2- when it is oxidized to CrO42-?
A
o
B
2
C
4
D
8
E
10
Verified Correct Answer: D.
Chemical Principles & Mechanism
from Cr2- to CrO42- involves 8 electrons to give oxidation state of Cr is +6
Source: WAEC / JAMB / NECO Classroom Archive (Record #36617)