Is this complex inner field or outer field? and how?

how?

it is d2sp3.In exited state one of the 3d electrons of Co2+ (3d7) transfers into 5s orbital and the other 6 electrons of 3d orbital pair and remain in 3, 3d orbitals.dx^2-y^2 & dz^2 remain empty.Then 2 inner 3d, one outer 4s & 3 outer 4p hybridize to form 6 equivalent d2sp3 hybrid orbital.Then 6 NH3 gives 6 electron pairs & create 6 coordinate bonds to form octahedral [Co(NH3)6]^2+ ion.It shows paramagnetic property as it has a unpaired electron in 5s orbital

sir how can i know in which complex the electron excite into 5s orbital and in which case it doesnt excite?

this is an rare example

it's proof is that it's oxidation potential is very high i.e it can easily lose its eletron

Co² = Co³+ +e due to Eletron in 5s

tq sir😇😇

sir i am asking about Co as central metal atom not Ni

co(nh3)6 2+ is inner orbital

sorry and thanks for correcting

here hybrisation in d2sp3 octahedral complex

sir but thare are 7 electron if they pair than also thare is a unpair electron present than how it is d2sp3?

see

1 unpaired is present and it is paramagnetic but it excites from 3d to 5s

and it is experimentally evidence that it form inner orbital complex with one unpaired electrons in 5s orbitals

sir in all the case one electron is excitee in 5s or thare are some specific complex?

rare exceptions are there and by practicing it comes

okk sir tqq