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NEET UG The d- and f-Block Elements & Coordination Compounds — practice questions — page 4

Explore 98 free The d- and f-Block Elements & 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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The d- and f-Block Elements & Coordination Compounds questions and exercises with answers

Showing questions 91–98 of 98.

Ethylenediamine (en) is best described as a:Read the answer and worked solution →Complete the definition of oxidation numberRead the answer and worked solution →The biological molecule HAEMOGLOBIN contains which metal at its centre?Read the answer and worked solution →The IUPAC name of K3[Fe(CN)6] is:Read the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Sort each ligand by how many donor atoms it usesRead the answer and worked solution →Tap every failing of Valence Bond TheoryRead the answer and worked solution →NEET · Chemistry · Tap the HalogensRead the answer and worked solution →

Worked practice questions

Ethylenediamine (en) is best described as a:

  1. Monodentate ligand, with one donor atom per molecule
  2. Bidentate ligand, with two N donor atoms per molecule
  3. Tridentate ligand, with three donor atoms in chelation
  4. Hexadentate ligand, with six donor atoms like EDTA
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Correct answer: B. Bidentate ligand, with two N donor atoms per molecule

Ethylenediamine has two nitrogen donor atoms; bidentate.

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Complete the definition of oxidation number

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Missing parts
  1. Answer
    ligands
    Choices
    1. ligands
    2. counter ions
    3. electrons
  2. Answer
    electron pairs
    Choices
    1. electron pairs
    2. protons
    3. brackets
Complete the statement
The oxidation number of the central atom is the charge it would carry if all the {0} were removed, along with the {1} they share with it.
Your syllabus defines it as a thought experiment: strip the ligands and see what charge is left. Source: syllabus Chemistry Part I, Ch 5 Coordination Compounds.

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The biological molecule HAEMOGLOBIN contains which metal at its centre?

  1. Copper (Cu) ion at the centre
  2. Magnesium (Mg) ion at the centre
  3. Iron (Fe) in a porphyrin ring
  4. Cobalt (Co) at the centre
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Correct answer: C. Iron (Fe) in a porphyrin ring

**Haemoglobin:** iron-porphyrin (haem) complex, carries O2 in vertebrate blood. **CHLOROPHYLL:** Mg-porphyrin (plant photosynthesis). **VITAMIN B12:** cobalt-corrin. Three iconic biological coordination compounds.

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