Which of the following ions has the given ground state electron configuration? 
Definitions:
Variance
The square of the standard deviation, indicating how much the values in a set vary from the mean.
Prediction Interval
A range of values that is likely to contain the value of an unknown parameter for a given level of confidence.
Confidence Interval
A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter with a specified level of confidence.
Regression Line
A line of best fit through a scatter plot of data points in statistical analysis, showing the relationship between two variables.
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