Which of the following statements is incorrec | vedclass

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(A) In the solid state,$NaCl$ exists as a rigid crystal lattice where ions are held together by strong electrostatic forces of attraction. Since there

Vedclass · Accepted Answer

$(i)$

Vedclass · Answer

(A) In the solid state,$NaCl$ exists as a rigid crystal lattice where ions are held together by strong electrostatic forces of attraction. Since there are no free ions or electrons to carry charge,it is a poor conductor of electricity in the solid state. It conducts electricity only in the molten state or in an aqueous solution where ions become free to move. Thus,statement $(i)$ is incorrect.Statement $(ii)$ is correct as canonical structures differ only in the distribution of electrons,not the positions of atoms.Statement $(iii)$ is correct because hybrid orbitals have more directional character,leading to better overlap.Statement $(iv)$ is correct as $VSEPR$ theory accounts for the lone pairs on $Xe$ in $XeF_4$ to predict its square planar geometry.

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