Concept explainers
a)
Interpretation:
The positrons radioactive isotope in the diagram has to be identified.
Concept introduction:
Beta decay:
The
Where the electron
b)
Interpretation:
The balanced nuclear decay reactions have to be written.
Concept introduction:
Beta decay:
The
Where the electron
Balanced nuclear reaction:
For a balanced
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Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
- The half-life of 1311 is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. s-1 (c) Convert 0.550 µCi to the SI unit the becquerel. |Bq (d) Find the number of 1311 nuclei necessary to produce a sample with an activity of 0.550 μCi. | 1311 nuclei (e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity at the end of that period. (Enter your answer for the number of half-lives to at least one decimal place.) half-lives mCiarrow_forwardWrite the nuclear equation for the alpha decay of Po-214.arrow_forwardWrite balanced nuclear equations for the following:(a) β⁻ decay of sodium-26(b) β⁻ decay of francium-223(c) Alpha decay of ²¹²₈₃Biarrow_forward
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