Nuclear Chemistry - Result Question 1
1. Bombardment of aluminium by $\alpha$-particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products $X, Y$ and $Z$ respectively, are
(2011)
(a) proton, neutron, positron
(b) neutron, positron, proton
(c) proton, positron, neutron
(d) positron, proton, neutron
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Answer:
Correct Answer: 1. (a)
Solution:
1.
(i) ${ } _{13}^{27} Al+{ } _2^{4} He(\alpha) \longrightarrow{ } _{14}^{30} Si+{ } _1^{1} X$
$X$ is proton ${ } _1^{1} H$.
(ii) ${ } _{13}^{27} Al+{ } _2^{4} He(\alpha) \longrightarrow{ } _{15}^{30} P+{ } _0^{1} Y$
$Y$ is neutron, ${ } _0^{1} n$.
(iii) ${ }{15}^{30} \mathrm{P} \longrightarrow{ }{14}^{30} \mathrm{Si}+{ }_1^0 \mathrm{Z}$
$Z$ is positron, ${ }_{+1}^0 e$
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