Types of Decay
78U175 -> 2He4 + 76Os171
What is alpha?
The particles majorly affected by decay.
What are protons and neutrons?
3Li6 -> 2He4 +
What is 1H2?
The half-life of sulfur-38 is 2.87 hours.
After 8.61 hours, what percent of oringal radiation is left?
What is 12.5 %?
What is beta?
43Tc99 -> -1eo + 44Ru99
What is beta?
Nuclear decay in order of increasing penetration.
What are alpha, beta, gamma?
92U233 -> 90Th229 +
What is 2He4?
If 1,250 counts of an oringally 10,000 count radioactive sample are being emitted after one day. What is the half-life of the element in hours?
What is 8 hours?
The number of decays that it takes to get from U-238 to Po-218.
What is 7 decays?
81Tl202 -> oYo + 81Tl202
What is gamma?
Nuclear decay that is only made up of energy.
What is a gamma ray?
19K42 -> -1e0 +
If 250 counts of an originally 1,000-count radioactive sample are emitted after one week. What is the half-life of the element in days?
What is 3.5 days?
Write the equation for uranium-234 emitting an alpha decay.
What is 92U234 -> 2He4 + 90Th230
53I125 -> -1eo + 2He4 + 52Te121
What are alpha and beta?
Nuclear decay that can be stopped by concrete.
What is a gamma ray?
74W184 -> 2He4 +
What is 72Hf180?
Strontium-90 has a half-life of 20 years. How long will it take for a 5-count sample to decay to 0.3125 counts?
Write the equation for Pa-234 emitting a gamma and beta particle.
What 91Pa234 -> -1eo + oYo + 92U234
82Pb210 -> -1e0 + 83Bi210 + 0Y0
What are gamma and beta?
What is unstable nuclei?
-> 56Ba142 + 36Kr90 + 3 -1e0
What is 89Ac232?
Germanium-66 had a half-life of 2.5 hrs. If, after a sample has sat for 15 hrs, 25 counts are now emitted, what was the radiation of the original sample?
What is 1,600 counts?
The order of decays from U-238 to Po-214.
What is a, b, b, a, a, a, a, a, b, b?