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inorganic & solve all of them

Consider the coordination compound, K2[Cu(CN)4]. A coordinate covalent bond exists between. Cand N in CN B) K+ and [Cu(CN)412- Kt and CN D Cu2+ and CN E Kt and Cu2+ Question 15 1 Point Only the trans-isomer of the complex potassium diaquabis(oxalato)manganate(III), shows optical activity. A True B False The primary and secondary valences of platinum (Pt) and vanadium (V) ions in the following complexes [Pt(trien)(gly)](C104)3 and (NH4)2[VO(C204)2] respectively are (+3, 6) and (+4, 6) (+4, 6) and (+4, 5) (+4, 2) and (+2,4) (+3, 4) and (+3, 5) E (+5, 6) and (+3, 4) Question 22 1 Point [COCI(NH3)512+ is an octahedral complex, which favors the associative mechanism through formation of a 5- coordinate intermediate to avoid the steric hindrance. A True B False