If the solution for the system of equations \[ x + 2y - z = 3, \ 3x - y + 2z = 1, \ 2x - 2y + 3z = 2 \] is \( ( \alpha, \beta, \gamma ) \), then find the value of \( \alpha^2 + \beta^2 + \gamma^2 \).
Which is the correct option for the following reaction? \[ 2\,\text{CH}_3\text{CH}_2\text{Br} \xrightarrow{\text{2Na/Dry ether}} \text{?} \]