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Boron shows anomalous behaviour and dif...

Boron shows anomalous behaviour and differs from the rest the members of its family - why ?

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Boron shows anomalous behaviour because of - 1. exceptionally small atomic size, 2. high ionisation enthalpy and 3. absence of d -orbitals in its valence shell.
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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-QUESTION-ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE)
  1. Crystalline boron is an extremely hard solid - why ?

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  2. What are boranes ?

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  3. Boron shows anomalous behaviour and differs from the rest the members...

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  4. Which two out of five members of carbon family are distinctly metals ?

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  5. Which one out of catechol, resorcinol and quinol can be used to titrat...

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  6. Carbon forms covalent compounds but lead forms ionic compounds-Why?

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  7. Which element of carbon family has no d-orbital in its valence shell?

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  8. Among the group-14 elements which is the most electronegative one?

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  9. Which member of carbon famil y has the lowest melting point?

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  10. Which is the more stable oxidation state of Pb ?

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  11. Out of diamond & graphite which is a good conductor of electricity and...

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  12. Which member of carbon family has the highest value of first ionisatio...

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  13. Which member of carbon family has the maximum tendency to exhibit cate...

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  14. What are the structural units of ice and dry ice?

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  15. Among the group-14 elements which one exhibits p pi- p pi multiple bon...

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  16. Give reasons for which carbon differs from the rest of the members of ...

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  17. What is the basic building unit of all silicates?

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  18. What happens when cone. H2SO4 is dropped on sugar?

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  19. What is buckminsterfullerene ?

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  20. What is the state of hybridisation of carbon in CO3^(2-) ?

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