What is meant by isolated gaseous atom and why this term is used in case of ionization energy?

Answer 1

ionization enthalpy means the energy required to remove an electron from isolated gaseous atom in its ground state . the isolated gaseous state is the state in which no other force of attraction acting on an atom form other atom . so that, we get the exact energy required to romove or add an electron to an atom. and here ground state is used to say that electron are stable and are not exited ..

so , the ionization enthalpy is the energy required to remove an electron from gaseous atom which is free from other atom in that state in which electrons are stable.

by shashank

Answer 2

Ionization energy is the amount of energy required to remove one or more electrons from the valency shell of an isolated gaseous atom. in this case it means that an a gaseous atom is isolated(unlike solid and liquid) as we know it. So just consider removing electrons from the valence shell of a gaseous atom.

Answer 3

These two states are required for the comparison purposes.

The atoms have the lowest energy states (i.e.the most stable) when in ground state.

The isolated gaseous atom means that there is no interaction with other atoms.

Answer 4

An isolated gaseous atom refers to an atom that is not bonded to any other atoms and is in a gaseous state. This term is used in the context of ionization energy because when an atom is in this state, it requires a specific amount of energy to remove an electron from it, which is known as the ionization energy. The energy needed to remove the electron is a measure of how tightly the electron is bound to the atom.