( Entropy ( ( Nuclear Energy ) ( ( Radioisotopes ( that ( ( decay ( by ( ( emitting ( ( nuclear particles ) ( -LRB- ( ( ( ( ( ( alpha , ) gamma ) , ) and ) ( beta particles ) ) -RRB- ) ) ) ) ( into ( other nuclei ) ) ) ) ) ( are ( called ( unstable isotopes ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Entropy)) (NP (NNP Nuclear) (NNP Energy)) (VP (VBZ Radioisotopes) (SBAR (IN that) (S (NP (NP (NN decay)) (PP (IN by) (S (VP (VBG emitting) (NP (NP (JJ nuclear) (NNS particles)) (PRN (-LRB- -LRB-) (NP (NP (NNP alpha)) (, ,) (NP (NN gamma)) (, ,) (CC and) (NP (JJ beta) (NNS particles))) (-RRB- -RRB-))) (PP (IN into) (NP (JJ other) (NNS nuclei))))))) (VP (VBP are) (VP (VBN called) (NP (JJ unstable) (NNS isotopes))))))) (. .)))
Entropy Nuclear Energy Radioisotopes that decay by emitting nuclear particles (alpha, gamma, and beta particles) into other nuclei are called unstable isotopes.
(ROOT (S (NP (NN Beta) (NN decay)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (DT an) (JJ unstable) (NN nucleus)) (VP (VBZ emits) (NP (NP (DT a) (JJ beta) (NN particle)) (CC and) (NP (NN energy))))))) (. .)))