Which of the following is/are true? Select all that apply. Particularly stable numbers of nucleons are called magic numbers Fr-202 is likely to undergo beta decay When Th-234 undergoes the decay series B. B, a, a, a, Ac-226 is produced Ru-90 is likely to undergo positron emission QUESTION 21 Calculate the half-life in minutes of a nuclide that loses 27.2% of its mass in 228 minutes Give your answer to 3 significant figures QUESTION 22 Calculate the pH of a solution containing 0 813 M NH3 and 1.417 M NH4NO3 Kb for NH3 is 1.76x10-5 4

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.