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1) di stands for two

2) silicon has 4 valence electrons & oxygen has 2.

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9y ago

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What is quartz made of?

Quartz is a natural form of silica, or silicon dioxide with the formula SiO2


How many elements are in SiO?

SiO2 is a macromolecule. Each silicon atom is covalently bonded to four oxygen atoms and each oxygen atom is covalently bonded to two silicon atoms.


Why is glass waterproof?

Glass is made (primarily) from Silicon Dioxide SiO2. However the molecule doesn't form discrete molecules but rather a continuous chain of hexagonal based structures. Glass is therefore one great big molecule and can't dissolve.


Why si doesnot form double bond with oxygen?

Silicon DOES form double bonds. In fact, something like 70% of the Earth's crust is made of minerals containing double-bonded silicon... feldspar is the most abundant mineral in the Earth's crust, and it is mainly made of silicates. Silicates are silicon-oxygen compounds. Most commonly, silicon double bonded to two oxygens with another two single bonded oxygens (to make SiO4(2-)), but SiO2, silicon double bonded to 2 oxygens, is also fairly common.The reason why there are fewer double bonded compounds with bigger elements (ie, further down the table) is because double bonds are shorter than single bonds, forcing the atoms' nucleii closer together. In the case of bigger atoms, the large nucleii make this difficult.


What is the formula mass of SiO2?

60.086 amu > It's not very helpful simply stating the answer. The relative atomic mass of 1 silicon (Si) atom = 28.1 For Oxygen (O) = 16.0. The calculation is: 28.1 + (16.0 x 2) = 60.1 g (1 mol of an atom = relative atomic mass in grams)