PYQ Vault
EbooksTutor

Primary and secondary valency of the metal from formula or AgCl data (Werner)

This type of question, asked 5 times: 2021 Paper 14, 2021 Paper 17, 27 Jul 2022, 24 Jan 2023, 7 Apr 2025. All 5 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2021 Paper 14

    35
    Empirical formula of an octahedral complex is CrCl3.3NH3.3H2OCrCl_{3}.3NH_{3}.3H_{2}O. It precipitates 3 moles of AgClAgCl. Find the secondary valency of the central atom.

  2. Question 2

    2021 Paper 17

    56
    3 moles of metal complex with formula Co(en)2Cl3Co(en)_{2}Cl_{3} gives 3 moles of silver chloride on treatment with excess of silver nitrate. The secondary valency of Co in the complex is (Round off to the nearest integer)

  3. Question 3

    27 Jul 2022

    57
    The conductivity of a solution of complex with formula CoCl3(NH3)4CoCl_{3}\left( NH_{3} \right)_{4} corresponds to 1:11:1 electrolyte, then the primary valency of central metal ion is

  4. Question 4

    24 Jan 2023

    35
    The primary and secondary valencies of cobalt respectively in [Co(NH3)5Cl]Cl2\left\lbrack Co\left( NH_{3} \right)_{5}Cl \right\rbrack Cl_{2} are:

    Tap an option to check your answer.

  5. Question 5

    7 Apr 2025

    111
    Match List-I with List-II
    List-I ComplexList-II Primary valencyvalency and Secondary
    (A)
    [Co(en)2Cl2]Cl\left\lbrack Co(en)_{2}{Cl}_{2} \right\rbrack Cl
    		(I)36
    (B)
    [Pt(NH3)2Cl(NO2)]\left\lbrack Pt\left( {NH}_{3} \right)_{2}Cl\left( {NO}_{2} \right) \right\rbrack
    		(II)34
    (C)
    Hg[Co(SCN)4]Hg\left\lbrack Co(SCN)_{4} \right\rbrack
    		(III)26
    (D)
    [Mg( EDTA )]2−\lbrack Mg(\text{~EDTA~})\rbrack^{2 -}
    		(IV)24
    Choose the correct answer from the options given below:

    Tap an option to check your answer.