In a regular octahedral molecule,$MX_6$,the number of $X-M-X$ bonds at $180^{\circ}$ is

The shape of a molecule which has $EB_5L_2$ molecular formula
{$E =$ Central atom,$B =$ Terminal atom,$L =$ Lone pair}

$SbF_5$ reacts with $XeF_4$ and $XeF_6$ to form ionic compounds $[XeF_3^+][SbF_6^-]$ and $[XeF_5^+][SbF_6^-]$. Determine the molecular shape of $[XeF_3^+]$ ion and $[XeF_5^+]$ ion respectively.

Which of the following pairs of species have identical shapes?

The $XeF_2$ molecule is:

Which of the following structure$(s)$ is/are non-planar?