Q42 of 60 Page 33

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.

Both carbon and silicon show catenation. Carbon shows much more catenation than silicon or any other element as it is smaller in size. This feature helps to make strong C—C bonds whereas the Si—Si bonds are comparatively weaker as it is larger in size. This is the reason why long chain compounds of silicon are not as stable as those of carbon.


More from this chapter

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40

Carbon, Group (14) element in the Periodic Table, is known to form compounds with many elements. Write an example of a compound formed with

(a) chlorine (Group 17 of periodic table)


(b) oxygen (Group 16 of periodic table)

 41

In electron dot structure, the valence shell electrons are represented by crosses or dots.

(a) The atomic number of chlorine is 17. Write its electronic configuration?


(b) Draw the electron dot structure of chlorine molecule.

 43

Unsaturated hydrocarbons contain multiple bonds between the two C atoms and show addition reactions. Give the test to distinguish ethane from ethene.

 44

Match the reactions given in Column (A) with the names given in column (B).

Column (A)


(a)


(b)


(c)


(d)


Column (B)


(i) Addition reaction


(ii) Substitution reaction


(iii) Neutralization reaction


(iv) Esterification reaction