Difference between Covalent and metallic solid
Covalent Solid |
Metallic Solid |
1) Covalent solid is consist of an atom of non metals particles. | Metallic solid consist of an atom of metal particles. |
2) Covalent solid are made up of atoms which are bonded by covalent bond. | Metallic solid are made of metallic atom or metallic cations and bounded by metallic bond. |
3) Covalent solid have a very low conductivity. | metallic solid have very high electrical and thermal conductivity. |
4) Covalent solid have lower melting and boilling points. | metallic solid have high melting and boilling points. |
5) Covalent Solid exist in solid, liquid and gases state. | metallic solid only exist in a solid state. |
6) Bonds in covalent solid is directional. | bonds in metallic solid are non-directional. |
7) Bond energy is higher in metallic bond. | bond energy is lower than other primary bond. |
8) Substances containing Covalent bond are not very hard except diamond, silicon, carbon. | The substance containing metallic bonds are hard. |
9) Covalent bonds Form when two atom shares their valence electron. | Metallic bond form when various number of atoms share a variable number of electron in a metal lattice. |
10) Binding energy in covalent solid is 150-500 KJ/Mole | binding energy in metallic solid is 700 – 1000 KJ/Mole. |
11) Melting points is 4000K | Melting point high as well as low ( varies) |
12) It has extended network of covalent bonds. | it has 3-D arrays of metal ions surrounded by a uniform sea of decolized electron. |
13) They are non-malleable. | they are malleable |
14) They are non ductile | they are ductile. |
15) Examples of covalent solids are : Al, Fe, Cr, H, H2O, Diamonds, Silicon. | Examples of metallic solids are – C6H12O6, Silver, Gold. |
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