Activity 2: Given the composition of each nucleus, complete the nucleosynthesis reactions below:
D = 1 p+, 1 n T = 1 p+, 2 n 3He = 2 p+, 1 n 4He = 2 p+, 2 n 7Be = 4 p+, 3 n 7Li = 3 p+, 4 n
a. p+ + n ___+ γ
b. 3He + D ___+ p+
c. 7Li + ___2 4He
d. ___ + D T + p+
e. ___ +___7Be + γ
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Answer:
a. p+ + n -> D + γ (This is a fusion reaction that occurs naturally in stars, where a proton and a neutron combine to form a deuterium nucleus, releasing a gamma ray in the process)
b. 3He + D -> 4He + p+ (This is an example of fusion reaction that occurs in the Sun and other stars, where two light nuclei combine to form a heavier nucleus, releasing energy)
c. 7Li + 2 4He -> 1 p+ + 2 n (This is an example of a nuclear decay reaction, where a heavier nucleus breaks down into two lighter nuclei and a proton)
d. 6Li + D -> T + 2 4He (This is an example of a fusion reaction that releases energy through the fusion of two light nuclei)
e. 4He + 7Be -> 8Be + γ (This is an example of a fusion reaction that occurs in the Sun and other stars, where two light nuclei combine to form a heavier nucleus, which then emits a gamma ray before decaying further)