Which molecule is linear?

Shape of $(SiH_3)_3N$ and $(SiH_3)_3P$ respectively are

Identify the geometry of $TeF_4$ molecule from the following.

$S +$ Conc. $H_2SO_4 \longrightarrow X + Y$
Here $X$ is a gas and $Y$ is a liquid and both are triatomic molecules. The number of electron lone pairs present on the central atoms of $X$ and $Y$ are respectively.

Assertion: The $HOF$ bond angle in $HFO$ is higher than the $HOCl$ bond angle in $HClO$.
Reason: Oxygen is more electronegative than halogens.

The shapes of nitrite $(NO_2^-)$ and nitrile $(NO_2^-)$ respectively are