Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa

A co-ordination complex compound of cobalt has the molecular formulae containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution on reacting with excess of  AgNO_3,AgCl  precipitate. The ionic formula for this complex would be:

  • Option 1)

    [Co(NH_3)_5(NO_2)Cl_2]

  • Option 2)

    [Co(NH_3)_5Cl][Cl(NO_2)]

  • Option 3)

    [Co(NH_3)_4(NO_2)Cl][(NH_3)Cl]

  • Option 4)

    [Co(NH_3)_5][(NO_2)_2Cl_2]

 

Answers (1)

best_answer

As we have learned

Secondary Valency -

These are non- ionisable and satisfied by neutral or negative molecules

- wherein

eg:

\left [ Co\left ( NH_{3} \right )_{6} \right ]^{3+}

Secondary Valency is 6.

 

 

The most probable complex which gives three moles ions in aqueous solution may be [Co(NH_3)_5NO_2]Cl_2 because it gives two chlorine atoms on ionisation.

              [Co(NH_3)_5NO_2]Cl_2\rightarrow [Co(NH_3)_5NO_2]^{2+}+2Cl^{-}

 

 

 

 


Option 1)

[Co(NH_3)_5(NO_2)Cl_2]

Option 2)

[Co(NH_3)_5Cl][Cl(NO_2)]

Option 3)

[Co(NH_3)_4(NO_2)Cl][(NH_3)Cl]

Option 4)

[Co(NH_3)_5][(NO_2)_2Cl_2]

Posted by

satyajeet

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2024 Topper: Farmer’s son Gajare Nilkrishna says ‘keep questioning until you understand’
anam-khan

NIT Puducherry Cut-off 2024: Computer Science and Engineering had highest closing rank last year
anam-khan

JEE Mains: Farmer's son from remote Maharashtra village aces exam

Latest Question