Select the Correct Balanced Reaction for the Decay of Barium-127 ${ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { - 1 } ^ { 0 } \beta + { } _ { 55 } ^ { 127 } \mathrm { Cs }$

question 1

Multiple Choice

Select the correct balanced reaction for the decay of barium-127 by positron emission.

• A) \({ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { - 1 } ^ { 0 } \beta + { } _ { 55 } ^ { 127 } \mathrm { Cs }\)
• B) \({ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { + 1 } ^ { 1 } \beta + { } _ { 55 } ^ { 126 } \mathrm { Cs }\)
• C) \({ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { + 1 } ^ { 0 } \beta + { } _ { 55 } ^ { 127 } \mathrm { Cs }\)
• D) \({ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { + 1 } ^ { 1 } \beta + { } _ { 57 } ^ { 128 } \mathrm { La }\)
• E) \({ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { + 1 } ^ { 0 } \beta + { } _ { 57 } ^ { 127 } \mathrm { La }\)

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