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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
Carbon dioxide is gas, while $SiO_2$ is solid because
  • A
    $CO_2$ is a linear molecule, while $SiO_2$ is angular
  • B
    van der Waals' forces are very strong in $SiO_2$
  • C
    $CO_2$ is covalent, while $SiO_2$ is ionic
  • ✓
    $Si$ cannot form stable bonds with $O,$ hence $Si$ has to form a $3D$ lattice
✓

Answer

Correct option: D.
$Si$ cannot form stable bonds with $O,$ hence $Si$ has to form a $3D$ lattice
d
$SiO _2$ is solid because $Si$ cannot form stable bonds with $O$, hence $Si$ has to form a $3D$ lattice of $SiO _2$ molecules and form solid structure.

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