The minium required energy of a photon that is involved in the creation of an electron-positron pair (which is pair production), is 1.022 MeV.
An electron-positron pair has a given probability of being produced when a photon of the stated energy (or a higher energy) passes close the nucleus of an atom. Pair production does not happen "in the presence of a photon" but happens as a direct result of the the actual presence of a photon (having at least the stated energy) in the presence of an atomic nucleus. The presence of an atomic nucleus is necessary to insure conservation of the quantum mechanical characteristics of the event. Said another way, the high energy photon alone cannot spontaneously create the electron-positron pair in pair production. A link can be found below to related questions.
ionization potential energy. but remember the atom must be neutral .
Neon's ionization energy is 20.1397
This energy is called ionization energy and is different for each chemical element.
Across a row on the periodic table ionization energy increases. Down a column, ionization energy decreases. --------------------------------------------------------- The first Ionization energy of Boron is 800.6 kJ mol-1
The energy required for an element to ionize and helium has the lowest.
The energy needed for ionization is called ionization energy. It is the minimum amount of energy required to remove an electron from an atom or molecule in its gaseous state.
The energy required to remove electrons from an atom is called ionization energy. It is the minimum energy needed to remove an electron from a neutral atom in the gaseous phase.
ionization potential energy. but remember the atom must be neutral .
No fire is not an ionization energy
Argon ionization energy is the amount of energy required to remove an electron from a neutral argon atom to produce a positively charged ion. In the case of argon, this energy is relatively high due to its stable electron configuration.
Neon's ionization energy is 20.1397
Tins ionization energy is 118.10
Helium has the highest ionization energy.
The work function is the minimum energy needed to remove an electron from a material, while the ionization energy is the energy required to remove an electron from a neutral atom. The work function is typically equal to or greater than the ionization energy, as it accounts for the additional energy needed to overcome the attractive forces within the material.
This energy is called ionization energy and is different for each chemical element.
high
Low