Chemical Bonding and Molecular Structure

The hybridisation of the central atom in $\mathrm{SF}_6$ is

Given below are two statements : Statement I : The number of compounds among $\mathrm{SO_2}$, $\mathrm{SO_3}$, $\mathrm{SF_4}$, $\mathrm{SF_6}$ and $\mathrm{H_2S}$ in which sulphur does not obey the Octet rule is 3. Statement II : Among $[\mathrm{H_2O, ClF_3, SF_4}]$, $[\mathrm{NH_3, BrF_5, SF_4}]$, $[\mathrm{BrF_5, ClF_3, XeF_4}]$ and $[\mathrm{XeF_4, ClF_3, H_2O}]$, the number of sets in which all the molecules have one lone pair of electrons on the central atom is 1. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : Statement I : $\mathrm{F_2O<H_2O<Cl_2O}$ is the correct trend in terms of bond angle. Statement II : $\mathrm{SiF_4}$, $\mathrm{SnF_4}$ and $\mathrm{PbF_4}$ are ionic in nature. In the light of the above statements, choose the correct answer from the options given below :

$\mathrm{SF_4}$ is isostructural with : A. $\mathrm{BrF_4^{\ominus}}$ B. $\mathrm{CH_4}$ C. $\mathrm{IF_4^{\oplus}}$ D. $\mathrm{XeF_4}$ E. $\mathrm{XeO_2F_2}$ Choose the correct answer from the options given below :

According to Lewis theory, the total number of $\sigma$ bond-pairs and lone pair of electrons around the central atom of $\mathrm{XeO_6^{4-}}$ ion is ______.

Consider the following species: $\mathrm{BrF_5}$, $\mathrm{XeF_5^-}$, $\mathrm{BF_4^-}$, $\mathrm{ICl_4^-}$, $\mathrm{XeF_4}$, $\mathrm{SF_4}$, $\mathrm{NH_4^+}$, $\mathrm{ClF_3}$, $\mathrm{XeF_2}$, $\mathrm{ICl_2^-}$. Number of species having $sp^3d$ hybridized central atom is ________.

The pairs among $A=[\mathrm{SO_3^{2-},CO_3^{2-}}]$, $B=[\mathrm{O_2^{2-},F_2}]$, $C=[\mathrm{CN^-,CO}]$, $D=[\mathrm{NH_3,H_3O^+}]$ and $E=[\mathrm{MnO_4^{2-},CrO_4^{2-}}]$ that do not have similar Lewis dot structure are

Bromine trifluoride autoionizes to form $\mathrm{BrF_2^{\oplus}}$ and $\mathrm{BrF_4^{\ominus}}$. The shapes of the cation and anion are respectively ______, and ______.

HF has highest boiling point among hydrogen halides, because it has :

The number of molecules/ions that show linear geometry among the following is ______. $\mathrm{SO_2}$, $\mathrm{BeCl_2}$, $\mathrm{CO_2}$, $\mathrm{N_3^-}$, $\mathrm{NO_2}$, $\mathrm{F_2O}$, $\mathrm{XeF_2}$, $\mathrm{NO_2^+}$, $\mathrm{I_3^-}$, $\mathrm{O_3}$