Bonding giant structures

To melt the giant structure of diamond, very strong covalent bonds (1) between carbon atoms (1) must be broken. In contrast, only weak van der Waals forces (1) between iodine (I2) molecules (1) need to be broken when iodine is heated beyond its melting temperature. The strong covalent bonds within the iodine molecules are not affected. 

Figure 3.33a shows the diamond structure. Each of the carbon atoms in the giant structure is covalently bonded to four others. They form a tetrahedral arrangement similar to that found in silicon(iv) oxide (p. 50). This bonding scheme gives rise to a very... 

It is further indicated that misconceptions are mainly because the terms electron transfer and ionic bonding are set equal in chemistry lessons. Students concern themselves only with isolated ions instead of with giant structures. They substantiate the number of bonds that an ion can form, with isolated bonds between individual ions they reinforce their ideas additionally with the Octet rule and the resulting noble gas configuration of individual ions. 

Bonding and structure Giant metallic lattice Giant metallic lattice Giant metallic lattice Giant covalent (three- dimensional) Simple molecular (P4) Simple molecular (Sg) Simple molecular (CI2) Monatomic (Ar)... 

Finally, macromolecular covalent solids are unusual in comprising atoms held together in a gigantic three-dimensional array of bonds. Diamond and silica are the simplest examples see Figure 2.13. Giant macroscopic structures are always solid. 

Compounds containing covalent bonds have molecules whose structures can be classified as either simple molecular or giant molecular. 

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