JEE Main · 2005 · 08 May 2005 · Offline · p-Block Elements

Given below are two statements:

Statement I: The number of pairs among [${\mathrm{SiO}}_2,{\mathrm{CO}}_2$], $\left[\mathrm{SnO},{\mathrm{SnO}}_2\right],\left[\mathrm{PbO},{\mathrm{PbO}}_2\right]$ and $\left[\mathrm{GeO},{\mathrm{GeO}}_2\right]$, which contain oxides t …

A 'p'-block element (E) and hydrogen form a binary cation ${\left({\mathrm{EH}}_{\mathrm{x}}\right)}^{+}$, while ${\mathrm{EH}}_3$ on treatment with ${\mathrm{K}}_2{\mathrm{HgI}}_4$ in alkaline medium gives a precipitate of basic mercury(II)amido-iodine. Given below are first …

Given below are two statements :

Statement I: The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in its group.

Statement II : A group 15 element's hydride ${\mathrm{EH}}_3$ has the lowest boiling point among corresponding hydrides of oth …

Two p-block elements X and Y form fluroides of the type ${\mathrm{EF}}_3$. The fluoride compound ${\mathrm{XF}}_3$ is a Lewis acid and ${\mathrm{YF}}_3$ is a Lewis base. The hybridization of the central atoms of ${\mathrm{XF}}_3$ and ${\mathrm{YF}}_3$ respectively are

Given below are two statements:

Statement I: The correct order in terms of bond dissociation enthalpy is ${\mathrm{Cl}}_2>{\mathrm{Br}}_2>{\mathrm{F}}_2>{\mathrm{I}}_2$
Statement II: The correct trend in the covalent character of the metal halides is …

Given below are two statements :

Statement-I : Element ' X ' and ${}^{\prime }\mathrm{Y}$ ' are the most and least electronegative elements, respectively among $\mathrm{N},\mathrm{As},\mathrm{Sb}$ and P . The nature of the oxides ${\mathrm{X}}_2{\mathrm{O}}_3$ and …