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Geometrical shapes of the complexes (p),(q),(r) formed by the following reactions respectively are : `Cu^(2+)(aq)+KCN(aq)("excess")to"complex"(p)` `Co^(2+)(aq)+KNO_2(s)+H^+ (aq)to"complex"(q)` `Zm^(2+)(aq)+NaOH(aq)("excess")to"complex"(r)`A. Tetrahedral , octahedral and square planarB. tetrahedral , octahedral and tetrahedralC. Square planar , octahedral and tetrahedralD. Octahedral, octahedral and tetrahedral |
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Answer» Correct Answer - B (A)`Cu^(2+)(aq)+4CN^(-)(aq)("excess")to[Cu(CN)_4]^(3-)`(aq)(p) `[Cu(CN)_4]^(3-)-3d^(10)` electron configuration and , therefore , `sp^3` hybridisation and tetrahedral geometry. (B)`Co^(2+)(aq)+3K^(+)(aq)+7NO_2^(-)(s)+2H^(+)(aq)toK_3[Co(NO_2)_6]darr (q)+NOuarr+H_2O` `[Co(NO_3)_6]^(3-)-3d^(6)` electron configuration and , therefore , `d^2sp^3` hybridisation and octahedral geometry. (C )`Zn^(2+)(aq)+4OH^(-)(aq)("excess")to[Zn(OH)_4]^(2-)(r)` `[Zu(OH)_4]^(2-)3d^10` electron configuration and , therefore , `sp^3` hybridisation and tetrahedral geometry. |
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