In gaseous triethylamine,the $C-N-C$ bond angle is $.....$ degrees.

Assertion : All $F-S-F$ angles in $SF_4$ are greater than $90^\circ$ but less than $180^\circ$.
Reason : The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.

Match the species given in List-$I$ with their correct geometric shapes given in List-$II$.

List-$I$	List-$II$
$(1)$ ${H_3O^+}$	$(A)$ Linear
$(2)$ ${HC \equiv CH}$	$(B)$ Angular
$(3)$ ${ClO_2^-}$	$(C)$ Tetrahedral
$(4)$ ${NH_4^+}$	$(D)$ Trigonal bipyramidal
	$(E)$ Pyramidal

Which of the following statements is correct about $I^{+}_3$ and $I^{-}_3$ molecular ions?

The molecules having square pyramidal geometry are

The geometry of $I_{3}^{-}$ is