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NEETChemistryClassification of Elements and Periodicity in Properties

How are elements arranged within the vertical columns or groups in the Periodic Table?

Options

  1. AAlphabetically
  2. BBy atomic mass
  3. CBy valence electrons
  4. DBy similar outer electronic configurations

Correct answer

D. By similar outer electronic configurations

Step-by-step solution

The elements having similar outer electronic configurations in their atoms are arranged in vertical columns, referred to as groups or families.

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