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AP EAMCET202119 Aug 2021Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements? a. Nitrogen b. Phosphorous c. Chlorine d. Fluorine

Options

  1. AP < N < F < C l
  2. BN < P < F < C l
  3. CC l < F < P < N
  4. DF < C l < N < P

Correct answer

B. N < P < F < C l

Step-by-step solution

So we know that Cl has high electron gain enthalpy because the small size of F and there is very high electronic repulsion among the electrons of fluorine. In Phosphorous and nitrogen the phosphorous has high electron gain enthalpy than nitrogen because of larger size and lower electron density. So the order becomes N < P < F < Cl

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