Home
Class 12
CHEMISTRY
Scandium forms no coloured ions, yet it ...

Scandium forms no coloured ions, yet it is regarded as a transition elements. Explain why?

Text Solution

Verified by Experts

Scandium in the ground state has one electron in the 3d-subshell. Hence, it is regarded as a transition elements. However, in its common oxidation state `+3` it has no electron in `3d` subshell `(3d^(0))` Hence, it does not form coloured red ions.
Promotional Banner

Topper's Solved these Questions

  • APPENDIX INORGANIC VOLUME 2

    CENGAGE CHEMISTRY|Exercise Exercises|126 Videos

  • AMINES

    CENGAGE CHEMISTRY|Exercise QUESTION BANK|1 Videos

  • AROMATIC COMPOUNDS AND ALKYL AND ARYL HALIDES

    CENGAGE CHEMISTRY|Exercise Archives Subjective|18 Videos

Similar Questions

Explore conceptually related problems

Explain the following: (a) Europium (II) is more stable than cerium (II) (b) Zr and Hf exhibit similar properties. ( c) Scandium forms no coloured ions, yet it is regarded as a transition metal.

Explain why zinc is not rgardede as a transition element.

The element scandium (Z=21) does not exhibit variable oxidation state and yet it is regarded as a transition element. Explain.

Which of the following is not regarded as a transition element ?

Give reasons for the following: (a) Transition metals and many of their compounds act as catalysts. (b) Scandium (Z = 21) does not exhibit variable oxidation state and yet it is regarded as a transition element. (c) Write the step involved in the preparation of Na_2CrO_4 from chromite ore.

CENGAGE CHEMISTRY-APPENDIX INORGANIC VOLUME 2-Short Answer Type
  1. Explain why transition elements have manuy irregularties in their elec...

    Text Solution

    |

  2. The paramagnetic character in 3d transition series elements increases ...

    Text Solution

    |

  3. Scandium forms no coloured ions, yet it is regarded as a transition el...

    Text Solution

    |

  4. Assertion : Hydrochloric acid is not used to acidify a KMnO(4) solutio...

    Text Solution

    |

  5. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions in solution are good reducing a...

    Text Solution

    |

  6. Why is the separation of lanthanide elements difficult?

    Text Solution

    |

  7. The second ionisation enthalpies of both Cr and Cu are higher than tho...

    Text Solution

    |

  8. Name the compound used for measuring the hardness of water, i.e., for ...

    Text Solution

    |

  9. How will you distinguish between the following isomer pairs? (a). (i...

    Text Solution

    |

  10. The magnitude of stability constant gives an indication of the stabili...

    Text Solution

    |

  11. What are the most common coordination numbers encountered in coordinat...

    Text Solution

    |

  12. Name the central atom present in haemoglobin and chlorophyll.

    Text Solution

    |

  13. Wilkinson's catalyst is used as a homogeneous hydrogenation catalyst f...

    Text Solution

    |

  14. What is spectrochemical series?

    Text Solution

    |

  15. What is crystal field splitting energy? How does the magnitude of tria...

    Text Solution

    |

  16. What are t(2g) and e(g) orbitals?

    Text Solution

    |

  17. Give the geometry and magnetic character of [NiBr4]^(2-)

    Text Solution

    |

  18. How is tetrabutyl tim prepared?

    Text Solution

    |

  19. What is te coordination number of Fe in [Fe(EDTA)]^(ɵ)?

    Text Solution

    |

  20. Name the two broad categories of organometallic compounds.

    Text Solution

    |