Match species given in Column I with the electronic configuration given in Column II.
`{:(,"Column I",,"Column II",),(("a"),"cr",("i"),[Ar]3d^(8)4s^(0),),(("b"),Fe^(2+),("ii"),[Ar]3d^(10)4s^(1),),(("c"),Ni^(2+),("iii"),[Ar]3d^(6)4s^(0),),(("d"),Cu,("iv"),[Ar]3d^(5)4s^(1),),(,,("v"),[Ar]3d^(6)4s^(2),):}`

Answer

(a)-(iv);(b)-(iii); (c)-(i); (d)-(ii)