Question

Quartz and glass are different forms of SiO2, which are both insulators. SiO2 plays an essential role in the information age by serving as the insulating barrier in between the semiconducting channel (Si) and the electric gate (Au) in a transistor. What is the bonding in SiO2? Write down the bonding formula of SiO2. Hint: Si atom has 4 valence electrons, while O has 6.

Answer 1

In the case of SiO2 Silicon has 4 valence electrons s 6 ralence electrons It Total number of electron becoms 4+(2+6)= 16 LI -0-si- o-si-0 at formia giant covalent streecheere

In SiO2 each silicon atom is covalently bonded to four origen atoms. Themen Each oxygen atom in covalently bonded to two silicon atoms In the case of quartz, molecules combines to form a network of repeating hexagon 6 Silicon atoms oxygen atoms o crystalline SiO2 can be seen in Quartz can be seen in Amorphous SiO₂ the case of glas Crystalline SiO2 I cQuartz) Amorphous SiO2 (glass)
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