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Question
Complete the following nuclear fission reaction:
\[\ce {^235_92 U + ^1_0n -> ^148 La + ^85_35 Br +\underline{ } ^1_0n + Energy}\]
Solution
\[\ce {^235_92 U + ^1_0n ->^148_57 La + ^85_35 Br + \underline{3} ^1_0n + Energy}\]
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