Difference between Ionization Enthalpy and Electron Gain Enthalpy
Ionization Enthalpy is the energy required to remove one electron from the atom whereas electron gain enthalpy is the energy required to gain one electron from the atom
Structure of Atom
Difference between Valence Electrons and Valency
Valence Electrons is number of electrons in outermost shell whereas valency is number of electrons required for full outermost energy level
Difference between Shell and Orbital
Shell has subshells which has orbitals of multiple shapes
Difference between Orbit and Orbital
Orbit is well-defined circular path followed by electron whereas orbital is space where probability of locating electron is high