7. Diamond is covalent, yet it has high melting point. Why?
8. Write the dimeric structure of AlCl3.
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Answer:
Each carbon atom is covalently bonded to four other carbon atoms in diamond. A lot of energy is needed to separate the atoms. This is because covalent bonds are strong. This is the reason why diamond has a high melting point.
Explanation:
In AlCl3, Al has six electrons in the valence shell. Therefore, it is an electron deficient molecule and needs two more electrons to complete its octet. Chlorine, on the other hand, has three lone pairs of electrons.
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