HomeTestsSearchRankProfile
easyMCQChemistryChemistry
4 marks (−1)

The catalytic activity of transition metals and their compounds is ascribed mainly to:

  1. A
    their chemical reactivity
  2. B
    their magnetic behaviour
  3. C
    their unfilled d-orbitals
  4. D
    their ability to adopt variable oxidation states

Solution & Step-by-step Explanation

Transition metals and their compounds are effective catalysts primarily due to their ability to adopt multiple (variable) oxidation states and their ability to form complexes. This allows them to provide an alternative reaction pathway with lower activation energy by forming unstable intermediate compounds.

Practice this question

Try it yourself before checking the explanation above.

The catalytic activity of transition metals and their compounds is ascribed mainly to:
A
their chemical reactivity
B
their magnetic behaviour
C
their unfilled d-orbitals
D
their ability to adopt variable oxidation states

Share This Question

d-block ElementsCatalysis

Related Questions

mediumMCQ

Which of the following statements are true?A. Unlike Ga that has a very high melting point, Cs has a very low melting point.B. On Pauling scale, the electronegativity values of N and Cl are not the same.C. Ar, K^+, Cl^-, Ca^2+ , and S^2- are all isoelectronic species.D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.E. The atomic radius of Cs is greater than that of Li and Rb.Choose the correct answer from the options given below:

mediumMCQ

Match List I with List IIList I (Ion)A. Co^2+ B. Mg^2+ C. Pb^2+ D. Al^3+ List II (Group Number in Cation Analysis)I. Group-III. Group-IIIIII. Group-IVIV. Group-VIChoose the correct answer from the options given below:

hardMCQ

Predict the major product 'P' in the following sequence of reactions:

hardMCQ

Which of the following are paramagnetic?A. [NiCl_4]^2- B. Ni(CO)_4 C. [Ni(CN)_4]^2- D. [Ni(H_2O)_6]^2+ E. Ni(PPh_3)_4 Choose the correct answer from the options given below:

mediumMCQ

Given below are two statements:Statement I: Like nitrogen that can form ammonia, arsenic can form arsine.Statement II: Antimony cannot form antimony pentoxide.In the light of the above statements, choose the most appropriate answer from the options given below:

easyMCQ

Consider the following compounds: _2 , H_2_2 and H_2_4 . The oxidation states of the underlined elements in them are, respectively:

Ready for a Full Test?

Practice with timed mock tests and track your performance across Chemistry.

Browse TestsLeaderboard

Discussion