Give reason for the following observation

(a)- The tendency for catenation decreases down the group in group 14 

(b)- The decreasing stability of+3 oxidation state with increasing atomic no. in group 13. 

(c)- Molten aluminum bromide is a poor conductor of electricity.

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1 Answers

(a) it is due to decrease in bond dissociation energy which is due to increase in atomic size 

C-C > Si-Si >Ge-Ge>Sn-Sn>Pb-Pb. 

(b)- It is due to inert pair effect. 

(c)- Molten AlBr3 is poor conductor of electricity because it is covalent compound. 

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