unless otherwise instructed, you may use the periodic table in the chemistry: problems and solutions book…

unless otherwise instructed, you may use the periodic table in the chemistry: problems and solutions book for this question. which reaction represents a nuclear reaction? o co2 + h2o → h2co3 o 2na + cl2 → 2nacl o 92238u → 90234th + 24he2+ o 2h2o2 → 2h2 + o2

unless otherwise instructed, you may use the periodic table in the chemistry: problems and solutions book for this question. which reaction represents a nuclear reaction? o co2 + h2o → h2co3 o 2na + cl2 → 2nacl o 92238u → 90234th + 24he2+ o 2h2o2 → 2h2 + o2

Answer

Brief Explanations:

A nuclear reaction involves changes in the nucleus of an atom. In the given options, the reaction $\ce{^{238}{92}U\rightarrow^{234}{90}Th + ^{4}_{2}He^{2 + }}$ shows uranium - 238 decaying into thorium - 234 and an alpha particle (helium - 4 nucleus), which is a nuclear decay reaction. The other reactions are chemical reactions where only electron - based bonding changes occur, not changes in the nucleus.

Answer:

$\ce{^{238}{92}U\rightarrow^{234}{90}Th + ^{4}_{2}He^{2 + }}$