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4. d and f- block elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which of the following is not correct about transition metals
  • A
    Their melting and boiling points are high
  • B
    Their compounds are generally coloured
  • C
    They can form ionic or covalent compounds
  • ✓
    They do not exhibit variable valency
✓

Answer

Correct option: D.
They do not exhibit variable valency
d
(d) They show variable valency due to presence of vacant $ d-$ orbitals.

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