Predict a likely mode of decay for each of the following
unstable nuclides. EXPLAIN why this might be so. a) Mo-109 b) Fr-
202 c) Rn- 196 d) Sb - 132 e) P - 27 f) Ru - 90
Predict whether each of the following nuclides is stable or
unstable (radioactive). If the nuclide is unstable, predict the
type of radioactivity you would expect it to exhibit.
I have the answers but don't understand part of them.
(a) 20^11_Na
Stable (I understand why, the mass is too light to be
stable.)
But why are the types of radioactivity electron capture and
positron production? Why not alpha decay too? Those three are all
used when the nucleus is too light, so...
2)Each of the nuclides listed below decays either by beta
emission or by positron emission. Predict which type of decay each
will undergo and select the nuclides that decay by beta
emission. This list contains three beta emitters and three
positron emitters.
11747Ag
20680Hg
2413Al
85B
156C
106C
Construct a list for each radionuclide, its half life, mode of
decay, and principal type(s) and energies of emitted radiations.
Avoid radiations with energies < 10 keV or yields < 1%. Put
each radionuclide in a separate list.
H-3
C-14
F-18
P-32
S-35
Co-60
Sr-90
Tc-99m
I-125 & I-131
Cs-137
Ra-226
Am-241
Which type of nuclear decay is the following radioactive isotope likely to undergo?
All known stable isotopes are shown on the graph. The points form what is know as the "belt of stability".
If a radioactive isotope is above the belt of stability, think about what type of decay would decrease its N/Z ratio. If an unstable isotope is below the belt of stability, think about what type of decay would increase its N/Z ratio. If a radioactive isotope is...
State the likely relative positions of the mean, median, and
mode for the following distributions:
Family income in large city
Scores on a very easy exam
Heights of a large group of 25-year old males
The number of classes skipped during the year for a large group
of undergraduate