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-p-Block elements - I — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Example of a three-dimensional silicate is
  • A
    Zeolites
  • B
    Ultramarines
  • ✓
    Feldspars
  • D
    Beryls
✓

Answer

Correct option: C.
Feldspars
c
The feldspars are most abundant aluminosilicate minerals in the Earth surface. The silicon atoms and aluminium atoms occupy the centres of interlinked tetrahedra of $SiO_4^{-4}$ and $AlO_4^{-5}$ . These tetrahedra connect at each corner to other tetrahedra forming an intricate, three dimesional, negatively charged framework. The sodium cations sit within the voids in this structure

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