(a) A high-energy proton is absorbed by 12 C. Another nucleus, A, is produced in

Question

(a) A high-energy proton is absorbed by 12C. Another nucleus, A, is produced in the reaction, along with a gamma ray. Identify nucleus A. (Enter the mass number in the first raised box, the atomic number in the second lower box, and the element in the third box.)


(b) Nucleus A decays through positron emission to form nucleus B. Identify nucleus B.


(c) Nucleus B absorbs a proton to produce nucleus C and a gamma ray. Identify nucleus C.


(d) Nucleus C absorbs a proton to produce nucleus D and a gamma ray. Identify nucleus D.


(e) Nucleus D decays through positron emission to produce nucleus E. Identify nucleus E.


(f) Nucleus E absorbs a proton to produce nucleus F plus an alpha particle. What is nucleus F? (Note: If nucleus F is not 12C--that is, the nucleus you started with--you have made an error and should review the sequence of events.)

Explanation / Answer

(a) When 12C absorbed 1H produces 13N7

(b) When 13N7is decays through emission of positron and neutrino produces 13C6

(c) When 13C6absorbs 1H produces 14N7

(d) When 14N7absorbs 1H produces 15O8

(e) In this case the new nucleuos formed is 15N7

(f) When 15N7absorbs 1H produces 12C6 and 4He2 (alpha particle).

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