how can diamonds be made artificially? How do synthetic diamonds differ from natural ones?

28 Which of the two has a branches chain: isobutene or normal butane? 29 Catenation is the ability of an atom to form bonds with other atoms of the same element. It is exhibited by both carbon and silicon. Compare the ability of catenation of the two elements. Give reasons. 30 Give any two differences between the properties of diamond and graphite. What causes these differences? 31 Why does the element carbon form a large number of carbon compounds?