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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
Which one of the following is an $s$ - block element
  • A
    Aluminium
  • B
    Chromium
  • C
    Niobium
  • ✓
    Potassium
✓

Answer

Correct option: D.
Potassium
d
$(d)$ Potassium, $K - \left[ {Ar} \right]\,4{s^1}$.

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