Solveeit Logo
Login

Question

Chemistry Question on d -and f -Block Elements

Cobalt chloride when dissolved in water forms pink colored complex XX which has octahedral geometry. This solution on treating with cone HClHCl forms deep blue complex, Y‾\underline{Y} which has a Z‾\underline{Z} geometry X,YX, Y and ZZ, respectively, are

A

X=[Co(H2O)4Cl2]+,Y=[CoCl4]2−,Z=X =\left[ Co \left( H _2 O \right)_4 Cl _2\right]^{+}, Y =\left[ CoCl _4\right]^{2-}, Z = Tetrahedral

B

X=[Co(H2O)6]2+,Y=[CoCl6]3−,Z=X =\left[ Co \left( H _2 O \right)_6\right]^{2+}, Y =\left[ CoCl _6\right]^{3-}, Z = Octahedral

C

X=[Co(H2O)6]2+,Y=[CoCl4]2−,Z=X =\left[ Co \left( H _2 O \right)_6\right]^{2+}, Y =\left[ CoCl _4\right]^{2-}, Z = Tetrahedral

D

X=[Co(H2O)6]3+,Y=[CoCl6]3−,Z=X =\left[ Co \left( H _2 O \right)_6\right]^{3+}, Y =\left[ CoCl _6\right]^{3-}, Z = Octahedral

Answer

X=[Co(H2O)6]2+,Y=[CoCl4]2−,Z=X =\left[ Co \left( H _2 O \right)_6\right]^{2+}, Y =\left[ CoCl _4\right]^{2-}, Z = Tetrahedral

Explanation

Solution

So, the correct answer is (C): X=[Co(H2​O)6​]2+,Y=[CoCl4​]2−,Z= Tetrahedral