Question

Select the complex in which secondary valency is satisfied before the primary valency. 

Solution

Correct option is

Ni(CO)4

 

In metal carbonyls the oxidation state of metal is zero.

In this case oxidation state of Ni is zero.

SIMILAR QUESTIONS

Q1

The ion  is expected to have x isomers. x is

Q2

 

Which method can be used to distinguish

[Co(NH3)6][Cr(NO2)6] and [Cr(NH3)6][Co(NO2)6]

Q3

Select the complex that involves outer hybridization of central metal ion.

Q4

A complex containing Mn2+ and Br ion was found to have a magnetic moment of 5.92 BM. The probable formula and geometry of the complex is most likely to be :

Q5

 

A solution of ‘X’ containing 0.02 mole of ‘X’ per litre is mixed with another solution, a solution of ‘Y’ containing 0.02 mole of ‘Y’ per litre. 

     1 L of mixture solution + AgBO3 → ‘A’ ↓ 

     1 L of mixture solution + Excess BaCl2 → ‘B’↓  

If  ‘X’ is [Co(NH3)5SO4]Br, and    

     ‘Y’ is [Co(NH3)5Br]SO4,

then the number of moles of ‘A’ and ‘B’ obtained are, respectively

Q6

The splitting of degenerate d-orbitals in the formation of certain complex was observed as shown below

                                 

This type of splitting of d-orbitals occurs in the formation of

Q7

Which is not a π-acceptor ligand?

Q8

A complex of a certain metal ion has a magnetic moment of 4.90 B.M. Another complex of the same metal ion in the same oxidation state has a zero magnetic moment. Which of the following could be the central metal ion in the two complexes?

Q9

Which of the following is most acidic aqua ion?

Q10

We get a copper complex with ammonia having the formula [Cu(NH3)4]2+only in alkaline solution and not in acidic solution. It can be explained on the basis of the fact that :