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The mantle has less aluminum and less what than the crust does?
silicon
Which is less electronegative than silicon?
There are many elements less electronegative than silcon. Look at the periodic table, and pretty much everything (with a few exceptions) to the left of, and below silicon will be less electronegative.
How hard is iridium?
Iridium is a 6.5 on the MOHs scale. This makes it about as hard as glass, silicon, or iron pyrite. It is harder than titanium or manganese, but softer than quartz or vanadium.
Why is talc a better body powder than quartz?
Talc is a very soft mineral, unlike quartz, and so is less likely to be abrasive.
Why is garnet paper better than sand paper?
Garnet paper IS sandpaper -_-
What is Quartz is rich in which element?
Quartz consists of silicon and oxygen (2 times as many oxygen atoms than silicon atoms).
Is there a different mineral that can be used if we run out of quartz?
No, there is no substitute for quartz (silicon dioxide) as it has several special properties that no other mineral has (e.g. transparent to both ultraviolet and visible light). However if you are just looking for a different mineral than quartz that can be used as a source of silicon for use in semiconductors and silicone oils and plastics, yes there are other silicon based minerals but they are more complex than quartz is chemically which sometimes makes extracting the silicon more difficult and expensive.
The mantle has less aluminum and less than the crust does.?
silicon
The mantle has less aluminum and less what than the crust does?
silicon
Why is silicon dioxide considered to be a compound?
Silicon dioxide contains two different elements that are chemically bonded together in a fixed ratio.
The mantle has less aluminum and less?
The mantle has less aluminum and silicon than the crust does.
Why you use silicon not germanium in SCR?
because lekage current of silicon is less than germenium
Which is less electronegative than silicon?
There are many elements less electronegative than silcon. Look at the periodic table, and pretty much everything (with a few exceptions) to the left of, and below silicon will be less electronegative.
Comparison between float-zone process and czochralski process?
actually in CS we have melted silicon in quartz crucible, and in FZ there is already polysilicon cylinder from which we get another silicon ingot that is pure than CZ .
What does 20 jewels on a watch mean?
Jewels in watch terms are gem bearings that were used within the mechanical assembly inside the watch to reduce friction. Many of the low to medium range watches produced commonly used garnet or quartz. Top quality mechanical watches used Sapphire, Ruby or Diamond bearings as the gems have a lower coefficient than garnet or quartz.
Is silica dioxide quartz an organic molecule?
No. It is neither organic nor a molecule. Silicon dioxide consists only of silicon and oxygen. By definition, an organic compound must contain carbon. Second, silicon dioxide forms a covalent network rather than molecules.
How hard is iridium?
Iridium is a 6.5 on the MOHs scale. This makes it about as hard as glass, silicon, or iron pyrite. It is harder than titanium or manganese, but softer than quartz or vanadium.
