Write the formulae for the following coordination compounds.
(i) Tetraamminediaquacobalt(III) chloride
(ii) Potassium tetracyanonickelate(II)
(iii) Tris (ethane-1, 2-diamine) chromium(III) chloride
(iv) Amminebromidochloridonitrito -N-platinate(II)
(v) Dichlorido bis-(ethane-1, 2-diamine) platinum(IV) nitrate
(vi) Iron(III) hexacyanoferrate(II)