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TS EAMCET · Chemistry · Classification of Elements and Periodicity in Properties

The elements with highest and lowest electron gain enthalpy in group 16 respectively are

  1. A \(\mathrm{O} ; \mathrm{Te}\)
  2. B 0 ; Po
  3. C \(\mathrm{S}\); \(\mathrm{O}\)
  4. D \(\mathrm{S} ; \mathrm{Te}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\mathrm{S}\); \(\mathrm{O}\)

Step-by-step Solution

Detailed explanation

The electron gain enthalpy decreases with increases in size of the central atom on moving down the group. Oxygen has less negative electron gain enthalpy than sulphur. Hence, option (3) is correct.