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STD 11 - 3. Classification of elements and periodicity in properties — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
When the first electron gain enthalpy $(\Delta _{eg}H)$ of oxygen is $-141\,kJ/mol,$ its second electron gain enthalpy is
  • A
    a more negative value than the first
  • B
    almost the same as that of the first
  • C
    negative, but less negative than the first
  • ✓
    a positive value
✓

Answer

Correct option: D.
a positive value
d
$2^{nd}$ electron gain enthalpy of oxygen is positive.

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