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QJEEM23Chdd68: JEE Main 2023 Chemistry - Class 12 JEEM23Chdd68 Solution: The primary and secondary valencies of cobalt respectively in…

The primary and secondary valencies of cobalt respectively in [Co(NH3)5Cl]Cl2\mathrm{[Co(NH_3)_5Cl]Cl_2} are :

Multiple Choice Options

  • A 2 and 8
  • B 2 and 6
  • C 3 and 5
  • D 3 and 6

Step-by-Step Verified Solution

[Co(NH3)5Cl]Cl2\mathrm{[Co(NH_3)_5Cl]Cl_2}

x + 5 (0) – 1 = + 2 ⇒\Rightarrow x = + 3

Secondary valency is the number of ligands in the complex which is equal to 6.

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