Chemistry

Coordination Chemistry

319 Questions

Coordination chemistry focuses on coordination compounds, their structures, and their magnetic properties. The questions cover primary and secondary valencies, ligand types, and geometries of complexes. This topic is heavily tested in chemistry competitive exams and requires a good grasp of molecular structures.

primary and secondary valencycomplex geometriesligand field theorymagnetic properties of complexesisomerism in complexes

Coordination Chemistry Questions

Multiple choice

Which of the following pairs represents inner orbital complexes only?

  1. [Co(NH3)6]3+ and [Cr(H2O)6]3+

  2. [FeF6]3- and [Zn(H2O)6]2+

  3. [Co(NH3)6]3+ and [Zn(H2O)6]2+

  4. [FeF6]3- and [Cr(H2O)6]3+

  5. [Zn(H2O)6]2+ and [Cr(H2O)6]3+
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

[Co(NH3)6]3+ is an inner orbital complex with octahedral geomtry (d2sp3 hybridisation). [Cr(H2O)6]3+ is an inner orbital complex with octahedral geomtry (d2sp3 hybridisation).

Multiple choice

Assertion: [Cu(en)2]+2 is more stable than [Cu(NH3)4]+2. Reason: Both these complexes have a square planar shape.

  1. Both A and R is true and R is the correct explanation of A.

  2. Both A and R is true but R is not the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.

  5. Both A and R are false.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This option is correct because the correct explanation of A is [Cu(en)2]+2 contains two rings whereas there is no any ring in [Cu(NH3)4]+2.

Multiple choice

Match the following metal ions with their complex compounds?

 
i. Fe+2 a. Vitamin B12
ii. Co+2 b. Haemoglobin
iii. Mg+2 c. Brown ring complex
iv. Fe+ d. Chlorophyll
v. Fe+3 e. Gmelin’s salt

  1. i - a, ii - b, iii - c, iv - e, v - d

  2. i - e, ii - a, iii - d, iv - b, v - c

  3. i - e, ii - a, iii - d, iv - c, v - b

  4. i - b, ii - d, iii - a, iv - c, v - e

  5. i - b, ii - a, iii - d, iv - c, v - e
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This option is correct match of all metal ions with their complexes.