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NEETChemistryClassification of Elements and Periodicity in Properties

What is the primary factor responsible for the increase in atomic radius within a family or vertical column of the periodic table?

Options

  1. AAn increase in the number of valence electrons
  2. BA decrease in the effective nuclear charge
  3. CA decrease in the number of energy levels
  4. DA decrease in the atomic number

Correct answer

A. An increase in the number of valence electrons

Step-by-step solution

The increase in atomic radius within a family or vertical column of the periodic table to an increase in the number of valence electrons.

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