Recording-2025-02-19T15_04_41

Ionization Energy

The energy required to remove an electron from an atom in the gaseous state.

Electron Configuration

The distribution of electrons of an atom or ion in atomic or molecular orbitals.

Principal Quantum Number (n)

A number that indicates the relative size and energy level of atomic orbitals.

Electron Affinity

The change in energy when an electron is added to a neutral atom to form a negative ion.

Noble Gas Stability

The condition where atoms have filled electron shells, leading to lower energy configurations.

Photoelectron Spectroscopy

A technique that measures the energy of electrons emitted from a material upon exposure to light.

X-ray Absorption Spectroscopy

A technique used to study the electronic structure of materials by observing how they absorb X-rays.

Energy Levels

The fixed energies an electron can have in an atom.

Kilojoules per Mole (kJ/mol)

A unit of energy used to measure chemical processes and reactions per mole of substance.

Shielding Effect

The reduction in effective nuclear charge experienced by an electron in an atom, due to other electrons.

Group Trends in Ionization Energy

The general trend that ionization energy decreases as you move down a group in the periodic table.

Row Trends in Ionization Energy

The general trend that ionization energy increases as you move across a row in the periodic table.