CBSE (Science) Class 12CBSE
Share
Notifications

View all notifications

The hexaquo manganese(II) ion contains five unpaired electrons, while the hexacyanoion contains only one unpaired electron. Explain using Crystal Field Theory. - CBSE (Science) Class 12 - Chemistry

Login
Create free account


      Forgot password?

Question

The hexaquo manganese(II) ion contains five unpaired electrons, while the hexacyanoion contains only one unpaired electron. Explain using Crystal Field Theory.

Solution

`[Mn(H_2O)_6)]^(2+)` `[Mn(CN)_6]]^(4-)`

Mn is in the +2 oxidation state

The electronic configuration is d5

Mn is in the +2 oxidation state.

The electronic configuration is d5

The crystal field is octahedral. Water is a weak field ligand. Therefore, the arrangement of the electrons in `[Mn(H_2O)_6]^(2+)` is t2g3eg2 The crystal field is octahedral. Cyanide is a strong field ligand. Therefore, the arrangement of the electrons in `[Mn(CN)_6]^(4-)`is T2g5eg0 
Hence, hexaaquo manganese (II) ion has five unpaired electrons, while hexacyano ion has only one unpaired electron
  Is there an error in this question or solution?

APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 9: Coordinate Compounds
Q: 10 | Page no. 254

Video TutorialsVIEW ALL [1]

Solution The hexaquo manganese(II) ion contains five unpaired electrons, while the hexacyanoion contains only one unpaired electron. Explain using Crystal Field Theory. Concept: Bonding in Coordination Compounds - Valence Bond Theory (VBT).
S
View in app×