Q33 of 312 Page 221

What is the unique property of carbon atom? How is the property helpful to us?

The unique property of carbon atoms is their ability to link with each other through covalent bonds. This property is useful for us as it can give rise to a large number of carbon compounds.

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32 Give the common name of (i) ethyne, and (ii) ethane. 32 Write the molecular formula and structure of benzene. 33 Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms). 34 Giving their structures, state the number of single bonds and triple bonds (if any) in the following compounds:

(i) ethyne


(ii) ethane


(iii) benzene