D-And F-Block Elements Ques 468
Question: In the preparation of $ KMnO_4 $ pyrolusite $ (MnO_2) $ is first converted to potassium manganite $ (K_2MnO_4) $ . In this conversion, the oxidation state of manganese changes from
Options:
A) +1 to +3
B) +2 to +4
C) +3 to +5
D) +4 to +6
Show Answer
Answer:
Correct Answer: D
Solution:
In $ MnO_2( O.S.of,Mn,is+4 )in,K_2MnO_4 $ (O.S. of Mn is +6). Hence O.S. changes by 2.
