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Question

The atomic radius of potassium is larger than that of lithium


A
True
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B
False
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Solution

The correct option is A True
  1. An atomic radius is half the distance between adjacent atoms of the same element in a molecule.
  2. The atomic number of Potassium (K) is - 19. The electronic configuration of potassium is 2,8,8,1( 4 shells).
  3. The atomic number of Lithium (Li) is - 3. The shell structure is 2.1( 2 shells).
  4. Both are in the first group.
  5. Because of the large atomic shells of Potassium, its atomic radius is much larger than that of Sodium or Lithium.

Hence the given statement is true


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