RADIOACTIVITY 1 Flashcards
Marie Sklodowska Curie coined the term___________
to describe the new phenomenon observed by Antoine Henri Becquerel.
radioactivity
becquerel was born in paris in what year?
1852
This force governs how an unstable nucleus will decay into a stable nucleus
weak force
It is the energy required to separate an atomic nucleus completely into its constituent protons and neutrons.
nuclear binding energy
This process will change one nucleus to another if the product nucleus has a greater nuclear binding energy than the initial decaying nucleus.
radioacivity/radioactive decay
This force attracts the protons to each other and counters the electromagnetic force.
strong force
what year did becquerel began studying flourescence and phosphorescence
1883
ability of a crystal to absorb light
phosphorescence
what year did marie and pierre curie began to study the strange uranium rays
1898
nobel prize on radioactivity
1903
how many stable isotopes
270 stable isotopes
all stable nuclei and known as?
radioactive nuclei
true or false: nuclei are also unstable if they are excited
true
nature seeks the lowest energy state
nuclear stability
(n/p)
neutron to proton ratio
true or false: the more protons packed together the more neutson are needed to bind
true
true or false: nuclei with higher atomic numbers have more neutrons ro protons
true
one of the simplest ways to predict the nuclear stability is based on whether a nucleus contains an odd/even numbers pf proton and neutrons
predicting nuclear stability
true or false: nuclides contains odd # of both are least stable
true
true or false: nuclides contains even # of both are most stable
true
plot of number of neutron versus the number of protons
belt of stability
produce power
nuclear reactors
refers to the number of times radioactive decay occurs
decay rate
bq means?
becquerel
