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
The process requiring absorption of energy is
✓
$N \to N^-$
B
$F \to F^-$
C
$Cl \to Cl^-$
D
$H \to H^-$
✓
Answer
Correct option: A.
$N \to N^-$
a $(a)$ Nitrogen has stable $2p^3$ configuranon and also due to high $e^-$ charge density at outermost orbital it requires energy to add one extra $e^-$ in its outer most shell i.e., its first electron gain enthalpy is positive
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