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NEET UG Coordination Compounds — practice questions

Explore 49 free Coordination Compounds questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Coordination Compounds questions and exercises with answers

Showing questions 1–30 of 49.

1 mol of CoCl₃·6NH₃ (yellow) gives how many moles of AgCl on adding excess AgNO₃?Read the answer and worked solution →Mark the term each clue callsRead the answer and worked solution →Split Werner's primary and secondaryRead the answer and worked solution →Sort ligands by their denticityRead the answer and worked solution →Fix the broken naming ruleRead the answer and worked solution →Catch only structural isomerismRead the answer and worked solution →Merge inner and outer orbital complexesRead the answer and worked solution →Build the spectrochemical seriesRead the answer and worked solution →Match each compound to its jobRead the answer and worked solution →In which year did Alfred Werner win the Nobel Prize for his work on coordination theory?Read the answer and worked solution →Alfred Werner was the first to discover which property in certain coordination compounds?Read the answer and worked solution →Carnallite is a double salt. Which formula represents it?Read the answer and worked solution →EDTA⁴⁻ binds a metal ion through which donor atoms?Read the answer and worked solution →Coordination number counts only the number of:Read the answer and worked solution →What is the oxidation state of copper in the complex ion [Cu(CN)₄]³⁻?Read the answer and worked solution →In IUPAC names of complexes, the neutral ligand NO is called:Read the answer and worked solution →What is the IUPAC name of [Ag(NH₃)₂][Ag(CN)₂]?Read the answer and worked solution →What is the formula of potassium trioxalatoaluminate(III)?Read the answer and worked solution →How many geometrical isomers can a square planar complex [MABXL] show?Read the answer and worked solution →Why do tetrahedral complexes lack geometrical isomers?Read the answer and worked solution →Optical isomerism in complexes is most common in:Read the answer and worked solution →[Co(NH₃)₆][Cr(CN)₆] and [Cr(NH₃)₆][Co(CN)₆] are examples of which isomerism?Read the answer and worked solution →[Cr(H₂O)₆]Cl₃ and [Cr(H₂O)₅Cl]Cl₂·H₂O are a pair of:Read the answer and worked solution →Why do ionisation isomers react differently with the same reagent?Read the answer and worked solution →Which hybridisation does cobalt use in the paramagnetic complex [CoF₆]³⁻?Read the answer and worked solution →How many unpaired electrons are present in tetrahedral [NiCl₄]²⁻?Read the answer and worked solution →How many unpaired electrons does the outer orbital complex [FeF₆]³⁻ contain?Read the answer and worked solution →Which of these octahedral complexes is diamagnetic?Read the answer and worked solution →[MnBr₄]²⁻ has a spin-only magnetic moment of 5.9 BM. What is its geometry?Read the answer and worked solution →Which is a shortcoming of valence bond theory?Read the answer and worked solution →

Worked practice questions

1 mol of CoCl₃·6NH₃ (yellow) gives how many moles of AgCl on adding excess AgNO₃?

  1. 0 mol
  2. 2 mol
  3. 1 mol
  4. 3 mol
Show answer and solution

Correct answer: D. 3 mol

CoCl₃·6NH₃ = **[Co(NH₃)₆]Cl₃**, a 1:3 electrolyte. All 3 Cl⁻ are ionisable (outside coord sphere) → 3 mol AgCl precipitates. The 6 NH₃ are in the coord sphere (secondary valence = 6).

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Mark the term each clue calls

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Clues and terms
  1. Clue
    The bound partner, as simple as a chloride ion or as large as a protein
    Item
    Ligand
  2. Clue
    The atom the ligands are bound to, and a Lewis acid in the entity
    Item
    Central atom
  3. Clue
    An ionisable group written outside the square bracket
    Item
    Counter ion
  4. Clue
    How many ligand donor atoms sit directly bonded to the metal
    Item
    Coord. number
  5. Clue
    The spatial arrangement of the ligand atoms attached to the metal
    Item
    Polyhedron
  6. Clue
    Charge the metal would carry if every ligand left with its shared pair
    Item
    Oxidation no.
  7. Clue
    A metal bound to only one kind of donor group
    Item
    Homoleptic
  8. Clue
    A metal bound to more than one kind of donor group
    Item
    Heteroleptic
  9. Clue
    A ligand with two different donor atoms, either one able to ligate
    Item
    Ambidentate
Instructions
Tap the cell each clue names. Three marks in a row, column or diagonal wins.
_Source: syllabus Chemistry Part 1, Ch 5 Coordination Compounds_

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Split Werner's primary and secondary

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Left
Primary valence
Items
  1. Region
    Primary valence
    Item
    Ionisable
  2. Region
    both
    Item
    Anions satisfy
  3. Region
    Secondary valence
    Item
    Non ionisable
  4. Region
    Primary valence
    Item
    Ionic bond
  5. Region
    Secondary valence
    Item
    Neutral ligands
  6. Region
    both
    Item
    Werner's idea
  7. Region
    Secondary valence
    Item
    Covalent bond
  8. Region
    Secondary valence
    Item
    Fixed for metal
Right
Secondary valence
Instructions
Tap a chip, then tap primary, secondary, or the middle when it fits both.
_Source: syllabus Chemistry Part 1, Ch 5 Coordination Compounds_

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