Question

Electron gain enthalpy of fluorine is less negative than that of electrons but fluorine is better oxidising agent why

Answer 1

Answer:

Explanation:

Fluorine has higher electronegativity than Chlorine but it has a very small size in comparison to chlorine. Electron gain enthalpy is the energy released (or absorbed) when an element accepts an electron. Chlorine readily accepts an electron due to its high nuclear charge and larger size. But in case of fluorine, due to small size the electrons in the outer shell repel each other. Due to this adding an extra electron becomes difficult. Hence Chlorine has more electron gain enthalpy than fluorine.