crystallises in a rhomobohedral structure. Consider a situation where 
lithium 
is extracted from the lattice. To keep the crystal electrically neutral, change in average oxidation state of 
is
decrease 
increase 
increase 
decrease
Text Solution
Verified by ExpertsB
crystallises in a rhomobohedral structure.
Let at initial 100 atoms are present of both 
and 
Li carries (+1) charge and Co carries (+3) charge. So the total charge will be 400 .
After 
is extracted then cobalt have to increase its oxidation state to balance the total charge.
So, after extraction of 
atom new oxidation state of Co to 3.5 .
Change in oxidation state 
final oxidation state
initial oxidation state
Change in average oxidation state of Co
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