Question
Chemistry Question on Classification of elements & periodicity in properties
In which of the following pairs of elements electron gain enthalpy difference is highest?
A
Cl, Ar
B
Cl, Ne
C
F, Ar
D
F, Ne
Answer
Cl, Ne
Explanation
Solution
Chlorine has the most negative ΔHeg (–349 kJ/mole) whereas Neon has the most positive ΔHeg (116 kJ/mole)