সমীকরণগুলো পূর্ণ করোঃ

(ক)

(খ) $\mathrm{AgBr}+2 \mathrm{NH}_{4} \mathrm{OH} \rightarrow\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right] \mathrm{Br}+2 \mathrm{H}_{2} \mathrm{O}$

(গ) ${ }_{13}^{27} \mathrm{Al}+{ }_{\mathrm{o}}^{1} \mathrm{n} \rightarrow{ }_{2}^{4} \mathrm{He}+{ }_{11}^{24} \mathrm{Na}$