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Assertion (A) : Maximum covalency of ca...

Assertion (A) : Maximum covalency of carbon is four .
Reason (R) : Carbon has no d-orbitals in its valence shell .

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DINESH PUBLICATION-P BLOCK ELEMENTS (GROUP 13 AND 14 )-Boron family
  1. Anhydrous AlCl(3) is covalent but hydrated AlCl(3) is electrovalent. ...

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  2. Which elements constitute group 14 of periodic table? Write their elec...

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  3. Assertion (A) : Maximum covalency of carbon is four . Reason (R) : ...

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  4. At room temperature, CO(2) is a gas while SiO(2) is a solid because

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  5. Why is SnCl(2) more easly formed than SnCl(4)?

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  6. SiF(6)^(2-) exist but not CF(6)^(2-) explain why ?

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  7. Carbon and silicon are mainly tetravalent while germanium, tin and lea...

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  8. Trisilicylamine is a weaker base than trimethylamine. Explain.

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  9. Trisilicylamine is a weaker base than trimethylamine. Explain.

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  10. Elemental silicon does not form a graphtie like structure. Explain.

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  11. Why are silicones? How are they prepared? Give their important applica...

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  12. At room temperature, CO(2) is a gas while SiO(2) is a solid because

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  13. PbCl(4) is less stable than SnCl(4) but PbCl(2) is more stable than Sn...

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  14. C Cl(4) does not show hydrolysis but SiCl(4) is readily hydrolysed bec...

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  15. How does carbon differ from rest of the elements in the group?

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  16. Carbon dioxide is a gas but silica is a solid because

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  17. Carbon and silicon both belong to the group 14, but inspite of the sto...

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  18. Why C Cl4 is resistant to hydrolysis , but SiCl4 is readily hydrolysed...

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  19. Why the first ionisation energy of carbon atom is greater than that of...

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  20. Which out of carbon and silicon forms multiple bonds?

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