Bombardment of aluminium by $\alpha$-particle leads to its artificial disintegration in two ways, (i) and…

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

1. proton, neutron, positron
2. neutron, positron, proton
3. proton, positron, neutron
4. positron, proton, neutron

Asked in: JEE Advanced 2011 (Paper 1)

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