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Silanes are feq in mumber whereas alkanc...

Silanes are feq in mumber whereas alkances are large in muimber . Explain .

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Carbon has more temndecy for catenation due to high ` C-C` bond strength , hence, it forms a large numerbn of alkances. However , silicon ahs numch less tendecy for catenation as compared to carbon duce to much waker `Si -Si` bondes and hence vety few silans are known .
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CENGAGE CHEMISTRY-P-BLOCK GROUP 14 - CARBON FAMILY-Ex (Subjective)
  1. No form fo elecmental silicon is comparabnle to graphite Give reason .

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  2. Why carbon froms covalent compounds whereas lead forms ionic compounds...

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  3. Give reason : Down the group (narr ) tendency for catenation increases...

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  4. Give one chemical reaction to show that tin (II) is a reducing agent w...

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  5. CO2 is a gas . While SiO2 is a high melting solide . Give reason .

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  6. Give one chaemical reaction to explain why time (II) chloride is a red...

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  7. C and Si are always tetravelent , but Ge, Sn and Pb show divalency Gvi...

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  8. Tendency to exhibit +2 oxidation state increases with increasing atom...

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  9. Why trimethylamine si pyramidal but trisiluylamine is planar ?

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  10. (CH3)3N acts as a Lewis base , but (SiH3)3 have very little baklsic ch...

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  11. CO is stable , but analogous SiO is not stable . Why ?

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  12. Why PbX2 is more stable than PbX4?.

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  13. PbO2 acts as a stronger oxidising agent than SnO2. Cmment .

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  14. Give reason : CO is readily absorbed by ammonitcal cuprous chloride , ...

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  15. Silanes are feq in mumber whereas alkances are large in muimber . Expl...

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  16. Are (CH3)3N and (SiH3)3N siostructurel , Justify uour answer .

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  17. For a mineral . liAl (SiO3)2, what is the charge on SiO3 unit ? What i...

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  18. A metal M forms two chlofrodes M Cl2 and MCl4 respectively . In which ...

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  19. An inorfanic compound (X) made up of two most occurring elements in th...

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  20. Explain the following : a. Oil paintings trun blackish after sometim...

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