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Allotropes. Li Jiawang. general knowledge about allotropes.

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Allotropes

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Allotropes
Allotropes

Li Jiawang


General knowledge about allotropes
general knowledge about allotropes.

  • Allotropes are different forms of the same element with their atoms arranged differently from one another. They exhibit different behavior and characteristics. The conditions that changes allotropic forms are pressure, temperature and light. For example, for carbon to turn into diamond, we have to heat graphite to a very high temperature under great pressure . It is to simulate the conditions 140-190 kilometers down in the Earth’s mantle where diamonds are formed.


Arrangement of atoms in different forms of allotropes
Arrangement of atoms in different forms of allotropes.

Atomic arrangement in diamond

Atomic arrangement in carbon

Therefore, it can be concluded that when the allotropic forms are changed, the arrangement

of atoms change as well, allowing the allotrope to exhibit different characteristics.

Also, the number of atoms in a molecule also changes when

change in allotropic forms take place.


Allotropes


Let s watch a video on allotropes of carbon
Let’s watch a video on allotropes of carbon. than other allotropes. Examples are the O2 of oxygen which is far more abundant than the O3 of oxygen, ozone.

  • http://www.youtube.com/watch?v=vYkyUqUa6vU


Summary of learning points in the video
Summary of learning points in the video. than other allotropes. Examples are the O2 of oxygen which is far more abundant than the O3 of oxygen, ozone.

  • Structure of atoms in some allotropes of carbon, namely diamond, lonsdaleite, graphite, fullerenes.

  • Interesting fact about diamond: the diamond is not made up of molecules but is one big molecule itself.

  • There are different types of fullerenes, example C180 and C60.


Allotropes

  • Thank You than other allotropes. Examples are the O2 of oxygen which is far more abundant than the O3 of oxygen, ozone.


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