Answer
A) $Se_{34}^{80} + H_{1}^{2} ->Se_{34}^{81} + P_{1}^{1} $
B) $Be_{4}^{9} + H_{1}^{2} ->Li_{3}^{9} + 2P_{1}^{1} $
C) $B_{5}^{10} + n_{0}^{1} ->Li_{3}^{7} + \alpha_{2}^{4} $
Work Step by Step
Balanced nuclear equations are as follows:
A) $Se_{34}^{80} + H_{1}^{2} ->Se_{34}^{81} + P_{1}^{1} $
B) $Be_{4}^{9} + H_{1}^{2} ->Li_{3}^{9} + 2P_{1}^{1} $
C) $B_{5}^{10} + n_{0}^{1} ->Li_{3}^{7} + \alpha_{2}^{4} $