Which of the following substances is isostructural with carbon dioxide $(CO_2)$?

The shape of $O_2F_2$ is similar to that of

The number of bonding and non-bonding electron pairs on the $N$ atom in $NO_3^-$ are respectively ..........

Which of the following compounds have the same number of lone pairs on their central atom?
$I. XeF_5^- \quad II. BrF_3 \quad III. XeF_2 \quad IV. H_3S^{+} \quad V. CH_2$ (Methylene)

Which of the following molecules is linear?

The largest bond angle is in