Question

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 :

• A. Proton, neutron, positron
• B. Neutron, positron, proton
• C. Proton, positron, neutron
• D. Positron, proton, neutron

Answer 1

The correct option is A Proton, neutron, positron

(i) ${}_{13}^{27}Al{+}_2^{4}He\left(\alpha \right){\to }_{14}^{30}Si{+}_1^{1}X$
X is proton ${}_1^{1}H$

(ii) ${}_{13}^{27}Al{+}_2^{4}He\left(\alpha \right){\to }_{15}^{30}P{+}_0^{1}Y$
Y is neutron, ${}_0^{1}n$
${}_{15}^{30}P{\to }_{14}^{30}Si{+}_1^{0}Z$
Z is positron, ${}_{+1}^{0}e$