Elements havebeen classified as as s-,p-, d- and f-block elements of the basisof the types oforbital which receives the last electron. Are there any exceptions to thisgeneralization ? Comment.

Elements havebeen classified as as s-,p-, d- and f-block elements of t

1.	Elements havebeen classified as as s-,p-, d- and f-block elements of the basisof the types oforbital which receives the last electron. Are there any exceptions to thisgeneralization ? Comment.
Answer» SOLUTION :Someexceptions are : (i) Zn, Cd, Hg and CN all receive the last ELECTRON in theirrespective s-orbitals but arecalledd-block ELEMENTS (ii)the receives the lastelectron in thed-orbitalbut is called f-blockelement.