Write the ground state electronic configurations of $Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu$.

The ground state electronic configurations are as follows:
$Sc \ (Z=21): [Ar] \ 3d^1 \ 4s^2$
$Ti \ (Z=22): [Ar] \ 3d^2 \ 4s^2$
$V \ (Z=23): [Ar] \ 3d^3 \ 4s^2$
$Cr \ (Z=24): [Ar] \ 3d^5 \ 4s^1$
$Mn \ (Z=25): [Ar] \ 3d^5 \ 4s^2$
$Fe \ (Z=26): [Ar] \ 3d^6 \ 4s^2$
$Co \ (Z=27): [Ar] \ 3d^7 \ 4s^2$
$Ni \ (Z=28): [Ar] \ 3d^8 \ 4s^2$
$Cu \ (Z=29): [Ar] \ 3d^{10} \ 4s^1$