Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Coordination Compounds question

2015 · Q75
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Coordination Compounds
  5. /2015 · Q75

Coordination Compounds question

2015 · Q75

NEETChemistryCoordination CompoundsMCQ+4 / −1
Which of these statements about [Co(CN)6]3−-− is true?
  1. A
    [Co(CN)6]3−-− has four unpaired electrons and will be in a high-spin configuration.
  2. B
    [Co(CN)6]3−-− has no unpaired electrons and will be in a high-spin configuration.
  3. C
    [Co(CN)6]3−-− has no unpaired electrons and will be in a low-spin configuration.
  4. D
    [Co(CN)6]3−-− has four unpaired electrons and will be in a low-spin configuration.
View written solutionFree

Correct answer: C

[Co(CN)6]3−-−

oxidation no. of Co = +3

Co+3 = [Ar] 3d6 4s0

CN– is a strong field ligand and as it approaches the metal ion the electrons must pair up.

AIPMT 2015 Cancelled Paper Chemistry - Coordination Compounds Question 84 English Explanation


∴\therefore∴ [Co(CN)6]3– has no unpaired electrons and will be in a low spin configuration.

PreviousNext

More from Coordination Compounds

  • Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25oC?2015 · MCQ
  • Which of the following complexes is used to be as an anticancer agent?2014 · MCQ
  • Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is2014 · MCQ
  • Which among the following is a paramagnetic complex?2013 · MCQ
  • Which is diamagnetic?2013 · MCQ
  • Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to which of the following formulae?2013 · MCQ
  • In a particular isomer of [Co(NH3)4Cl2]o, the Cl−Co−Cl angle is 90o, this isomer is known as2013 · MCQ
  • The anion of acetylacetone (acac) forms Co (acac)3 chelate with Co3+. The rings of the chelate are2013 · MCQ