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Cobalt chloride when dissolved in water forms pink colored complex X which has octahedral geometry. This solution on tre…

Q1

Cobalt chloride when dissolved in water forms pink colored complex X which has octahedral geometry. This solution on treating with conc. \(HCl\) forms deep blue complex, Y which has a Z geometry. X, Y and Z, respectively, are

a

\(X =\left[ Co \left( H _2 O \right)_6\right]^{2+}, Y =\left[ CoCl _4\right]^{2-}, Z =\) Tetrahedral

b

\(X =\left[ Co \left( H _2 O \right)_6\right]^{2+}, Y =\left[ CoCl _6\right]^{3-}, Z =\) Octahedral

c

\(X =\left[ Co \left( H _2 O \right)_6\right]^{3+}, Y =\left[ CoCl _6\right]^{3-}, Z =\) Octahedral

d

\(X =\left[ Co \left( H _2 O \right)_4 Cl _2\right]^{+}, Y =\left[ CoCl _4\right]^{2-}, Z =\) Tetrahedral

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