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  • Explain the following observations : (i)    Copper atom has completely filled d orbitals (3d10) in its ground state, yet it is regarded as a transition element. (ii)    Cr2+</s

Explain the following observations :

(i)    Copper atom has completely filled d orbitals (3d10) in its ground state, yet it is regarded as a transition element.

(ii)    Cr2+ is a stronger reducing agent than Fe2+ in aqueous solutions.

 

 

 

 
 
 
 
 

Answers (1)

(i)    Copper has 3d10 configuration in the ground state yet it is regarded as transition element since it shows +2 oxidation state in many compounds and contains unpaired electrons in +2 oxidation state (3d9)

(ii)    Cr2+ is a strong reducing agent than Fe2+ in aqueous solution since E^0_{Cr^{2+}/Cr} is lower than E^0_{Fe^{2+}/Fe}, therefore Cr2+ is easily oxidized than Fe2+.

Posted by

Sumit Saini

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