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NEETChemistryClassification of Elements and Periodicity in Properties

What is the expected trend in electron gain enthalpy as you go down a group in the periodic table?

Options

  1. AIt becomes more negative.
  2. BIt becomes less negative.
  3. CIt remains constant.
  4. DIt fluctuates randomly.

Correct answer

B. It becomes less negative.

Step-by-step solution

Electron gain enthalpy is expected to become less negative as you go down a group in the periodic table because the size of the atom increases, and the added electron would be farther from the nucleus.

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