Module 6: Nuclear Physics Flashcards
1
Q
Proton number
A
The number of protons in the nucleus of an atom.
2
Q
Nucleon number
A
The number of neutrons and protons in the nucleus of an atom.
3
Q
Isotopes
A
Nuclei of the same element with a different number of neutrons but the same number of protons.
4
Q
Activity
A
The rate of decay or disintegration of nuclei in a radioactive sample.
5
Q
Decay constant
A
The constant λ for an isotope that appears in the equation A= λN. It is equal to the probability of an isotope decaying per unit time interval.
6
Q
Half-life
A
The mean time taken for half the number of active nuclei in a radioactive sample to decay.
7
Q
Binding energy
A
The minimum external energy required to separate all the neutrons and protons of a nucleus.
8
Q
Binding energy per nucleon
A
Binding energy divided by no. of nucleons.
