Answer
Electron geometry: Linear
Molecular geometry: linear
Idealized bond angle: $180^{\circ}$
Deviation from idealized bond angle : no
Work Step by Step
$CS_2$ has 2 double covalent bonds between C and S atoms. Its electron geometry is linear since carbon has no lone pairs. Its molecular geometry is also linear. Its idealized bond angle is that of the linear geometry, $180^{\circ}$. The molecule is linearly symmetrical and there is no deviation from the idealized bond angle.
