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diamond has a giant molecular structure. Each carbon atom is covalently bonded to four other carbon atoms.
2, A lot of energy is needed to separate the atoms diamond This is because covalent bonds are strong, and diamond  contains very many covalent bonds. This makes diamonds melting point high.

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1. There are stonger covalent bonds between carbon atoms in each layers in diamond.Diamond is harder due to the strong forces holding them.so, the force holding the atoms in graphite is weaker compared to diamond.Therefore, diamond is harder.
2. Graphite is a much better conductor of electricity than diamond due to the mobility of electrons in the outer valence shell..

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1. the various layers of graphite atoms are joined by weak forces, and they can slide over each other.Due to this 'sheet' like structure, graphite is soft to touch, SInce diamond atoms are held by strong forces, it is hard.
2. Since diamond atoms have stronger forces of attraction, breaking it will require a lot of energy.
3. Because graphite has a fourth valence electron free so it can conduct electricity.

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1)The fourth valence electron of carbon is free to move, which reduces the strength of the covalent bond.
2) Diamond has stronger covalent bonds which give it a higher melting point.
3)Graphite has a better conductivity because of its fourth free electron.

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there are strong covalent bonds between carbon atoms in each layer. This allows layers of carbon to slide over each other in graphite

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1) Diamonds atoms are held by strong covalent bonding ,it is hard. Graphite atoms are joined by weak forces ,it is soft .
2) The carbon atoms in diamond are connected to four other atoms ,this increases the strength of bond. thus it has high melting point.
3)Graphite has the fourth cvalance electron free. So it conducts electricity.

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The four surrounding atoms are at the four vertices of a regular tetrahedron. The compact and rigid three dimensional arrangements of carbon atoms gives it a high density.Hence diamond is hard
Graphite is soft because it is lighter than diamond.a graphite consists of layer of carbon atoms or sheets of carbon atoms. Each carbon atom in a graphite layer is jointed to three other carbon atoms by strong covalent bond to form hexagonal rings.since the various sources of carbon atoms are joint by weak forces they can slide over one another .

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1) Diamond has a more stronger covalent bond than graphite. In diamond crystal is  linked to four other carbon atoms.
2)The compact and rigid three dimensional arrangements of carbon atom gives it a high melting point.
3)Each carbon in graphite is linked to only three atoms and thus conducts electricity but diamond is covalently bonded to four carbon atoms.

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1) While there are strong covalent bonds between carbon atoms in each layer, there are only weak forces between layers. This allows layers of carbon to slide over each other in graphite.

2) Diamond has a giant molecular structure. Each carbon atom is covalently bonded to four other carbon atoms. ... This is because covalent bonds are strong, and diamond contains very many covalent bonds.

3)Each carbon atom is bonded into its layer with three strong covalent bonds. This leaves each atom with a spare electron, which together form a delocalised 'sea' of electrons loosely bonding the layers together. These delocalised electrons can all move along together – making graphite a good electrical conductor.

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1. In diamond, each carbon atom is covalently bonded to 4 other carbon atoms. This carbon atoms gives rise to tetrahedral structure. This makes it hard.

2. Since the atoms of this carbon gives rise to tetrahedral structure, a lot of energy is needed to separate them this they have a high melting point.

3. Graphite contains delocalised electrons. These electrons are able to move freely and thus are good conductors of electricity.

The electrons of Diamond on the other hand can't move freely and thus are non conductors.

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1.	Explain why, diamond is hard while graphite is soft.                                    2.	Explain why diamond has a high melting point. 3.	Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?

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1.	Explain why, diamond is hard while graphite is soft.                                    2.	Explain why diamond has a high melting point. 3.	Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?