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NEETChemistryClassification of Elements and Periodicity in Properties

Assertion (A) 16th group elements have higher ionisation enthalpy values than 15th group elements in the corresponding periods. Reason (R) 15th group elements have half-filled stable electronic configurations.

Options

  1. ABoth A and R are correct and R is the correct explanation of A .
  2. BBoth A and R are correct put R is not the correct explanation of A .
  3. CA is correct but R is incorrect.
  4. DA is incorrect but R is correct.

Correct answer

D. A is incorrect but R is correct.

Step-by-step solution

(A) is incorrect but ( R ) is correct as ionisation enthalpy values of group 15 th is higher than group 16th due to stable half-filled electronic configurations.

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