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Explain, why does boron not form B^(3+) ...

Explain, why does boron not form `B^(3+)` ions.

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VMC MODULES ENGLISH-p-BLOCK ELEMENTS-1-JEE Advanced Archive
  1. Explain, why does boron not form B^(3+) ions.

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  2. Carbon acts as an abrasive and also as a lubricant, explain.

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  3. Moderate electrical conductivity is shown by

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  4. Give reason for the following in one or two sentences : ''Solid carbon...

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  5. Carbon tetrachloride burns in air when lighted ti give phosgene.

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  6. Give reasons Graphite is used as lubricant.

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  7. Graphite is used as a lubricant in machinery.

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  8. All the Al-Cl bonds in Al(2)Cl(6) are equivalent.

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  9. Each entry in column X is in some way related to the entries in column...

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  10. Write the balanced equation for the preparation of crystalline silicon...

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  11. The hydrolysis of alkyl substituted chlorosilanes gives .

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  12. The tendency for catenation is much higher for C than for Si.

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  13. The basic nature of the hydroxides of group 13 decreases progressively...

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  14. Diamond is

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  15. One recently discovered allotrope of carbon (e.g. C(60)) is commonly k...

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  16. The hydrolysis of trialkylchlorosilane , R3 SiCl, yields ……………………..,

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  17. Which of the following oxides is neutral ?

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  18. Which of the following halides is least stable and has doubtful existe...

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  19. Aluminium sulphide gives a foul odour when it becomes damp. Write a ba...

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  20. Anhydrous AlCl(3) is covalent from the data given below, perdict wheth...

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  21. A liquid which is permanently supercooled is frequently called a ……….....

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