In carbon tetrachloride,the four valencies of carbon are directed towards the four corners of a:

In which of the following is the bond angle maximum?

Which of the following structures of $ClF_3$ is the most stable?

Atoms in a $P_4$ molecule of white phosphorus are arranged regularly in the following way:

$A$ molecule with the formula $AX_4Y$ has all its elements from the $p-$block. Element $A$ is the rarest,monoatomic,non$-$radioactive element from its group and has the lowest ionization enthalpy value among $A, X,$ and $Y$. Elements $X$ and $Y$ have the first and second highest electronegativity values,respectively,among all known elements. The shape of the molecule is:

Fluorine reacts with dilute $NaOH$ and forms a gaseous product $A$. The bond angle in the molecule of $A$ is