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Question

M1,Q,R and S, respectively are:
  1. Zn2+,KCN and HCl and K4[Fe(CN)6]
  2. Ni2+,HCl and KCN and KOH
  3. Cd2+,KCN and HCl and Na2HPO4
  4. Co2+,HCl and KCN and K2CrO4

A
Ni2+,HCl and KCN and KOH
B
Cd2+,KCN and HCl and Na2HPO4
C
Co2+,HCl and KCN and K2CrO4
D
Zn2+,KCN and HCl and K4[Fe(CN)6]
Solution
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Similar Questions
Q1
An aqueous solution of metal ion (X) reacts seperately with reagents A and B in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion (Y) always form tetrahedral complexes with these reagents and on reaction with small amount of C reagent gives precipitate which dissolves in excess of C.

X, A, B respectively are:


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Q2

This question and the next one appeared in the in the linked comprehension format. Let's give them a shot.

An aqueous solution of metal ion M1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M2 always forms tetrahedral complexes with these reagents. Aqueous solution of M2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarised in the scheme given below:
SCHEME:

M1, Q and R, respectively are


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Q3
Zn2+ reacts with excess of HCl(aq),KCN(aq), and KOH(aq) separately. The shapes of complexes formed 'A', 'B' and 'C' in these cases respectively are:
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Q4
The coordination number of $$Ni^{2+}$$ is $$4$$.
$$NiCl_2+KCN$$(excess) $$\rightarrow A$$ (Cyano complex)
$$NiCl_2+$$conc. $$HCl$$(excess) $$\rightarrow B$$ (Chloro complex).

The hybridization of A and B are?
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Q5
The coordination number of $$Ni^{2+}$$ is $$4$$.
$$NiCl_2+KCN$$(excess) $$\rightarrow A$$ (Cyano complex)
$$NiCl_2+$$conc. $$HCl$$(excess) $$\rightarrow B$$ (Chloro complex).

The IUPAC name of A and B are?
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