Qstnid -I-10- The Hexaquo Manganese(ii) Ion Contains Five Unpaired Electrons, While The Hexacyanoion Contains Only One Unpaired Electron. Explain Using Crystal Field Theory. - 09: Coordination Compounds

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NEET-XII-Chemistry

09: Coordination Compounds

page 2

#10

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

Ans :


Mn is in the +2 oxidation state.	Mn is in the +2 oxidation state.
The electronic configuration is d^5.	The electronic configuration is d⁵.
The crystal field is octahedral. Water is a weak field ligand. Therefore, the arrangement of the electrons in is t2g3eg2.	The crystal field is octahedral. Cyanide is a strong field ligand. Therefore, the arrangement of the electrons in isT2g5eg0.

Hence, hexaaquo manganese (II) ion has five unpaired electrons, while hexacyano ion has only one unpaired electron.