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Why is the melting point of silicon much higher than that of argon even though argon has a greater molar mass?
Wiki User
∙ 15y ago
Because Argon exists as diatomic Ag2 molecules, with relatively weak inter-mocular forces (Van-der-Waals forces) between the molecules. Melting Argon only requires that these inter-olecular forces are overcome, which does not requires much energy as the molecules are small - so Argon melts at -189 degrees celcius - so is a gas at R.T.P Silicon on the other hand exists in a macro-molecular form, and all the atoms are covalently bonded to each other in a giant molecular lattice. To melt silicon, covalent bonds must be broken, which requires a great deal of energy, and hence silicon only melts at 1414 degrees celcius
Wiki User
∙ 15y ago
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Why are mantle rocks solid even though the Earth's interior temperature is very hot?
The melting temperature of materials is dependent on the pressure that is applied, whereby the higher the pressure, the higher the melting temperature. As such the rocks in the mantle are experiencing such a high pressure, that their melting point is driven up beyond the temperature within the Earth's mantle so they remain solid.
What is the ionic compound of silicon dioxide?
SiO2, though silicon dioxide is covalent, not ionic.
Is silicon bendable?
Silicon is crystalline and not really flexible, though just about anything can be bent slightly if it's thin enough.
Does the Earth contain much silicon?
Where Silicon is Found Pure silicon cannot be found in nature, though it makes up approximately 25.3-28.0% of the earth's crust, making it second in abundance (oxygen is first). Silicon is obtained by heating silica, or silicon dioxide with carbon or magnesium (or some reducing agent) in an electric furnace. Ref:http://web1.caryacademy.org/chemistry/rushin/studentprojects/elementwebsites/silicon/WhereFound.htm
What is the chemical formula of silicon hydrogen?
Silicon is simply silicon, and its symbol is Si. Silicon, though almost never occurs in its pure form in nature, but rather appears as Silicon dioxide. Silicon dioxide comprises about 26% of the Earth's crust.
Why is cesium a liquid at room temperature?
It isn't. It's actually solid at room temperature, though its melting point is not much higher.
Why are mantle rocks solid even though the Earth's interior temperature is very hot?
The melting temperature of materials is dependent on the pressure that is applied, whereby the higher the pressure, the higher the melting temperature. As such the rocks in the mantle are experiencing such a high pressure, that their melting point is driven up beyond the temperature within the Earth's mantle so they remain solid.
What is the difference of silicon diode and germanium diode?
A silicon diode has a voltage drop of approximately 0.7V, while a germanium diode has a voltage drop of approximately 0.3V. Though germanium diodes are better in the area of forward voltage drop, silicon diodes are cheaper to produce and have higher breakdown voltages and current capabilities.
Is silicon a mixture element or compound?
Silicon is a element.! this is because anything from the periodic table is in fact elements! :)
What is the ionic compound of silicon dioxide?
SiO2, though silicon dioxide is covalent, not ionic.
Why would you use silicon diodes instead of germanium?
Though germanium diodes were the first ones fabricated, several factors make silicon the choice vs. germanium diodes. Silicon diodes have a greater ease of processing, lower cost, greater power handling, less leakage and more stable temperature characteristics than germanium diodes. Germanium diodes' lower forward drop (.2V to .3V versus .7V to 1.0V) make them better at small signal detection and rectification.
Is silicon bendable?
Silicon is crystalline and not really flexible, though just about anything can be bent slightly if it's thin enough.
Are electronics and glass made of silicon?
The semiconductors in electronics are mostly made of silicon. Glass is a mixture of a variety of substances, though in most cases the main ingredient is silicon dioxide (SiO2).
Can silicon be a gas?
Sure, you just need to heat or pressurize it sufficiently. At 1 atm of pressure, elemental silicon boils at 2,357 degrees Celsius. At room temperature, though, silicon is solid.
Does acids or bases have a greater pH?
Bases have pH above 7, acids below 7, so the base pH is higher, though the acidity is lower.
What is the Melting point of cork?
Cork hasn't a melting point.
What is the relationship between energy and wave amplitude?
Not really much of a similaritiy there but FREQUENCY and energy there is. the higher the frequency the greater the energy I guess it could be the same with wavelenghth though
