RAD ONC EXAM 1 WITH ALL CORRECT & 100% VERIFIED
ANSWERS |LATEST UPDATE |GUARANTEED TO PASS
Radius of atom ✔Correct Answer-10⁻¹⁰m
Radius of atom's nucleus... ✔Correct Answer-1 x 10-14m
electron charge ✔Correct Answer-1.6 x 10^-19 C
Z ✔Correct Answer-atomic number
Number of protons
Lower left hand side Subscript
A ✔Correct Answer-Atomic mass
Protons and neutrons
Superscript
AMU ✔Correct Answer-atomic mass unit, 1/12 of the mass of a carbon-12 atom
Carbon 12 has 12amu
1.66X10 -27 kg
931MEV
atom units ✔Correct Answer-g/atom is Aw/Na
Atoms/g Nz/Aw
e-/g Na*Z/Aw
Na is avagadros number
Avagadro's number ✔Correct Answer-6.02 x 10^23
electron amu ✔Correct Answer-0.00055
proton amu ✔Correct Answer-1.0073
neutron amu ✔Correct Answer-1.0087
mass defect ✔Correct Answer-the difference in mass between a nucleus and its component
nucleons
, binding energy ✔Correct Answer-The energy needed to break up a nucleus into its
constituent nucleons.
Nucleus then K L M N
electromagnetic radiation ✔Correct Answer-a form of energy that exhibits wavelike behavior
as it travels through space
Decay constant (lambda) ✔Correct Answer-0.693/half life
half-life ✔Correct Answer-length of time required for half of the radioactive atoms in a
sample to decay
Number of particles equation ✔Correct Answer-N= N(naught)e raided to -lambda*T
Curie ✔Correct Answer-1 Ci = 3.7 X 10^-10
A=A(naught)^-lambda*T
Mean life ✔Correct Answer-the average lifetime for the decay of radioactive atoms 1.44 X half
life
Greater than the half life
radioactive elements ✔Correct Answer-Z > 82
Uranium activium and thorium series
Secular Equilibrium ✔Correct Answer-Parent T1/2 is much longer than child T1/2, ie Radon
(1620 y) and Radium (4.8d). What this means is that the activity of Radium won't change much
over time in a sealed container.
Decay constant will be the opposite. Parent will be much less than daughter.
Transient Equilibrium ✔Correct Answer-- Half-life of parent is not much different than half-life
of daughter.
alpha decay ✔Correct Answer-A nuclear reaction in which an atom emits an alpha particle
consisting of two protons and two neutrons. This increases the atomic number (Z) by 2 and the
mass number (A) by 4.
Usually happens to high Z elements
5-10 MeV released. That's pretty constant.
ANSWERS |LATEST UPDATE |GUARANTEED TO PASS
Radius of atom ✔Correct Answer-10⁻¹⁰m
Radius of atom's nucleus... ✔Correct Answer-1 x 10-14m
electron charge ✔Correct Answer-1.6 x 10^-19 C
Z ✔Correct Answer-atomic number
Number of protons
Lower left hand side Subscript
A ✔Correct Answer-Atomic mass
Protons and neutrons
Superscript
AMU ✔Correct Answer-atomic mass unit, 1/12 of the mass of a carbon-12 atom
Carbon 12 has 12amu
1.66X10 -27 kg
931MEV
atom units ✔Correct Answer-g/atom is Aw/Na
Atoms/g Nz/Aw
e-/g Na*Z/Aw
Na is avagadros number
Avagadro's number ✔Correct Answer-6.02 x 10^23
electron amu ✔Correct Answer-0.00055
proton amu ✔Correct Answer-1.0073
neutron amu ✔Correct Answer-1.0087
mass defect ✔Correct Answer-the difference in mass between a nucleus and its component
nucleons
, binding energy ✔Correct Answer-The energy needed to break up a nucleus into its
constituent nucleons.
Nucleus then K L M N
electromagnetic radiation ✔Correct Answer-a form of energy that exhibits wavelike behavior
as it travels through space
Decay constant (lambda) ✔Correct Answer-0.693/half life
half-life ✔Correct Answer-length of time required for half of the radioactive atoms in a
sample to decay
Number of particles equation ✔Correct Answer-N= N(naught)e raided to -lambda*T
Curie ✔Correct Answer-1 Ci = 3.7 X 10^-10
A=A(naught)^-lambda*T
Mean life ✔Correct Answer-the average lifetime for the decay of radioactive atoms 1.44 X half
life
Greater than the half life
radioactive elements ✔Correct Answer-Z > 82
Uranium activium and thorium series
Secular Equilibrium ✔Correct Answer-Parent T1/2 is much longer than child T1/2, ie Radon
(1620 y) and Radium (4.8d). What this means is that the activity of Radium won't change much
over time in a sealed container.
Decay constant will be the opposite. Parent will be much less than daughter.
Transient Equilibrium ✔Correct Answer-- Half-life of parent is not much different than half-life
of daughter.
alpha decay ✔Correct Answer-A nuclear reaction in which an atom emits an alpha particle
consisting of two protons and two neutrons. This increases the atomic number (Z) by 2 and the
mass number (A) by 4.
Usually happens to high Z elements
5-10 MeV released. That's pretty constant.
