Eamcet - Chemistry - Coordination Compounds

Which of the following pairs of ions are colourless ?

A.  Ti3+, Cu2+

B.  Sc3+, Zn2+

C.  Co2+, Fe3+

D.  Ni2+, V3+

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A complex compound of CO3+ with molecular formula COClx. yNH3 gives a total of 3 ions when dissolved in water. How many Cl- ions satisfy both primary and secondary valencies in this complex

A.  3

B.  1

C.  4

D.  0

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The element that can exhibit highest number of oxidation states amongst the following:

A.  V

B.  Mn

C.  Ni

D.  Co

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