D-And F-Block Elements Ques 498
Question: Which of the following compounds has colour but no unpaired electrons-
Options:
A) $ KMnO_4 $
B) $ K_2MnO_4 $
C) $ MnSO_4 $
D) $ MnCl_2 $
Show Answer
Answer:
Correct Answer: A
Solution:
Electronic configuration of Mn is $ [Ar]3d^{5}4s^{2} $ .Being transition metal it has 7 valence electrons and all are involved in bond formation in $ MnO_4^{-} $ . Hence it has no unpaired electron.
