Why do we sift electrons for 4s to 3d in some elements like the elements 24 and 29?
taking the example Cu 29
it's electronic configuration is
{Ar} 4s^2 3d^9
as we know that an orbital zero filled ,half filled or full filled are more stable than other configuration
therefore to stable the 3d orbital one electron is shifted from 4s orbital to 3d orbital
it's electronic configuration is
{Ar} 4s^2 3d^9
as we know that an orbital zero filled ,half filled or full filled are more stable than other configuration
therefore to stable the 3d orbital one electron is shifted from 4s orbital to 3d orbital