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Line up three from one block

Exercise and reference answers

Grid
    1. Group
      s block
      Item
      Na
    2. Group
      p block
      Item
      B
    3. Group
      d block
      Item
      Sc
    1. Group
      s block
      Item
      Mg
    2. Group
      d block
      Item
      Ti
    3. Group
      p block
      Item
      C
    1. Group
      p block
      Item
      N
    2. Group
      s block
      Item
      Ca
    3. Group
      d block
      Item
      Fe
Groups
  1. Item
    s block
  2. Item
    p block
  3. Item
    d block
Instructions
Tap a symbol, then a neighbour, to swap them. Line up three elements out of the same block.

Explanation

_Source: Qallery verified question bank, WBJEE, topic Classification of Elements and Periodicity_
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