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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
The electronic structure $(n - 1)\,{d^{1 - 10}}n{s^{0 - 2}}$ is characteristic of
  • ✓
    Transition elements
  • B
    Lanthanides
  • C
    Actinides
  • D
    Rare gases
✓

Answer

Correct option: A.
Transition elements
a
According to $(n+1)$ rule last electron will be filled in $(n-1)\, d$ orbital. Hence the given electyronic configuration belongs to $d$-block or transition metals.

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