Browse by Stream
Discuss Doubts
Home
Search for Exam, Articles, Questions
get app
Go To Your Study Dashboard
  1. Home
  2. Please,please help me The basic structural unit of feldspar, zeolites, mica, and asbestos is :
# Engineering

The basic structural unit of feldspar, zeolites, mica, and asbestos is :

 

  • Option 1)

    (SiO_{3})^{2-}

  • Option 2)

    SiO_{2}

  • Option 3)

    (SiO_{4})^{4-}

  • Option 4)

Answers (1)
P Plabita

 

Zeolites -

Hydrated alumino silicate having negative charge which is balanced by cations such as Na+, K+ or Ca2+

- wherein

Eg. ZSM-5

 

 

 

Silicates -

Compounds with basic unit SiO44-, each Si atom is linked to four oxygen atom tetrahedrally, joined by corners

- wherein

Silicates

 

 

 

(i) chemical formula zeolite:  .It is also known as hydrated aluminium silicate.

(ii) Mica : It is a potassium aluminium silicate KAl_{3}Si_{3}O_{10}(OH_{2}).

(iii) asbestos: It is a hydrous magnetium silicate with the chemical composition: Mg_{3}Si_{2}O_{5}(OH)_{ 4}.

(iv) Feldsbar is a potassium silicate KAlSi_{3}O_{8} and there are various sub-types of feldsbar are available in earth crust.

\Rightarrow silicate is a general name given to a group of minerals which have silicon-oxygen bonds with general formula (S_{+}O_{4}^{x-})_{n}

\therefore option (3) is correct

 


Option 1)

(SiO_{3})^{2-}

Option 2)

SiO_{2}

Option 3)

(SiO_{4})^{4-}

Option 4)

Similar Questions

Exams
Articles
Questions