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) \({ } _ { 56 } ^ { 127 } \mathrm { Ba } \rightarrow { } _ { + 1 } ^ { 0 } \beta + { } _ { 57 } ^ { 127 } \mathrm { La }\)

---

Definitions:

Sales Data

Information collected about the sales of products or services that can be analyzed to make business decisions.

Advertising Data

Information and metrics collected specifically related to advertising campaigns, including reach, impressions, clicks, conversions, etc.

Least Squares Estimate

A statistical technique that determines the line of best fit for a model by minimizing the sum of the squares of the vertical deviations from each data point to the line.

Dependent Variable

The variable in an experiment or study that is expected to change in response to changes in the independent variable.