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.



NCERT Chapter Video Solution

Dual Pane