Question

Quartz (sio2) is a solid with a melting point of 1550°c. the bonding in quartz is best described as

Answer 1

Covalent bonds.

Step-by-step explanation:

Quartz is a common mineral found in the earth's crust. Chemically it is composed of a silicon(Si) and oxygen (O) and has a formula SiO2, also known as silica or silicon dioxide.

The bonds formed between elements can be broadly classified into four types:

Ionic, Covalent, metallic and Van der waals

In the case of quartz, the each Si atom is covalently bonded to four O atoms and each O atom is forms a covalent bond with 2 Si atoms resulting in a hexagonal crystalline form. Covalent bonds are the strongest which explains why SiO2 has a high melting point.

Answer 2

The answer to this question would be: covalent bond

Silicon dioxide or SiO2 is made of silicon which is a metalloid and oxygen which is a gas. The bond that the molecule made is a polar covalent bond because silicon is not a real metal. Silicon dioxide is a polymorph that has many different kinds of crystal form.