Basic Atomic And Nuclear Physics
Exam with complete solution 2026
Electron cloud consisting of negatively charged electrons orbiting a dense nucleus. The
nucleus contains positively charged protons and electrically neutral neutrons -
ANSWERS-Structure and Components of Atoms
the number of protons in an atom - ANSWERS-Atomic Number
The average weight of an atom of an element - ANSWERS-Atomic Weight
the number of protons plus the number of neutrons - ANSWERS-Atomic Mass
1 amu is the weight of 1 nucleon(proton or neutron) in the carbon atom - ANSWERS-
Atomic Mass Unit
6.02 x 10^23 of anything - ANSWERS-Mole
an unstable atomic nucleus loses energy by emitting radiation in the form of particles or
electromagnetic waves (physical form changes to a lower state) - ANSWERS-
Radioactive Decay Process
when a charged particle passes through a material its electric field interacts with the
electric fields of the orbiting electrons and can cause the electrons to be raised to higher
energy state. energy transfers happen and an orbiting electron can get enough energy
to escape the atom(ionization) - ANSWERS-Charged Particle Interactions
Photoelectric effect., Compton scattering, pair production - ANSWERS-Photon
Interactions
photon transfers all it energy to an electron, ejecting it from the atom a short distance
away to lose energy and be absorbed by something nearby - ANSWERS-photoelectric
effect
same as photoelectric effect, but the photon energy is too high to be completely
absorbed so a new low energy photon is emitted - ANSWERS-Compton Scattering
