The energy required to raise the elctron from its ground state to some higher energy level is called ionization energy. (True /false)

The energy required to remove an electron from a gaseous atom from its ground state is called

Mass cannot be converted into energy.(True/ False)

The energy required to knock an electron completely out of an atom is called excitation energy. (true/false)

The lowest unfilled energy band formed just above the valence band is called conduction band. (True/false)

Calculate the energy required to excite an electron from first orbit of the hydrogen atom to the third orbit?

Energy required to ionise 2 mole of gaseous He^(+) ion present in its ground state is :

Power multiplied by time gives energy.(true/false)

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 A. (a) Estimate the potential energy of the system in eV, taking the zero of the potential energy at infinite separation of the electron from proton. (b) What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained in (a)?

The average energy required to extract one nucleon from the nucleus is called_______