Write the complete electron configurations of; 1:Mn 2:Mn2+(in aqueous solution).Comment ideas about stability of that cation in aqueous solution giving reasons.?

1 Answer
Mar 20, 2018

We gots #"manganese"#, #Z=25#

Explanation:

..and so ..

#Mn:1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^5#

In the parent atom.....the #4s# electrons are lower in energy than #3d#...in the ion, the scenario is reversed....

#Mn^(2+):{1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^5}^(2+)#

Manganese thus has unusual optical and magnetic properties....that MOST #Mn^(2+)# salts are quite colourless in aqueous solution (and high spin complexes) is a reflection of the stable spin state....