Electron Gain Enthalpy FAQs

What is electron gain enthalpy?

Electron gain enthalpy is the energy change that occurs when an isolated gaseous atom gains an electron to form a negative ion.

Why is electron gain reaction exothermic?

The electron gain reaction is exothermic because energy is released when an electron is added to an isolated gaseous atom, leading to a stable electronic configuration.

What factors affect electron gain enthalpy?

Factors like atomic size, nuclear charge, and electronic configuration influence the electron gain enthalpy of an element.

Which element has the highest electron gain enthalpy in the periodic table?

Chlorine has the highest electron gain enthalpy, with a value of -349 kJ/mol.

How does an electron gain enthalpy change across a period and down a group?

Electron gain enthalpy becomes more negative across a period from left to right due to increasing nuclear charge. It becomes less negative as you move down a group because of the increasing atomic size.

Electron Gain Enthalpy is the energy change when an atom in a gaseous state gains an electron to form a negative ion. This process can either release or absorb energy. Factors like atomic radius, nuclear charge, and electronic configuration influence the electron gain enthalpy. Understanding electron gain enthalpy is essential for comprehending the reactivity and stability of elements in chemical reactions. In this article, we look into what electron gain enthalpy is, its definition, factors affecting the variation of electron gain enthalpy, etc.