What Happens to the Atomic Number (Z) and the Mass

question 87

Multiple Choice

What happens to the atomic number (Z) and the mass number (A) when a nucleus emits a gamma ray?

• A) Z increases by 1; A is unchanged.
• B) Z is unchanged; A is unchanged.
• C) Z decreases by 1; A is unchanged.
• D) Z decreases by 2; A decreases by 4.

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Definitions:

MSR/MSE

Mean Square Residual/Mean Square Error, a measure used in statistics to estimate the variance of error or residual components.

T-Test Statistic

A statistic derived from sample data to determine if there is a significant difference between the means of two groups under study.

F-Test Statistic

A statistical method for comparing the variances from two different populations to ascertain if there is a significant difference between them.

Coefficient Of Determination

A statistical measure, often denoted as R^2, that represents the proportion of the variance for a dependent variable that's predictable from the independent variables in a model.