Discuss the factors affecting electron gain enthalpy and the trend in its variation in the periodic table.

Define ionisation enthalpy. Discuss the factors affecting ionisation enthalpy of the elements and its trends in teh periodic table.

Be and Ne have positive values of electron gain enthalpy against the general trend in their period in modern periodic table. Explain.

Electron gain enthalpy is an important periodic property. a) What is meant by electron gain enthalpy? b) What are the factors affecting electron gain enthalpy? c) How electron gain enthalpy varies on moving across a period? Justify.

Name. the element, which has the highest electron gain enthalpy or electron affinity value in the periodic table.

The correct order of negative electron gain enthalpy of the elements of oxygen family in the periodic table is :

Halogens have maximum negative electron gain enthalpy in the respective periods of the periodic table. Why ?