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SF(6) is known but SC(6) is not. Why?...

`SF_(6)` is known but `SC_(6)` is not. Why?

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Assertion (R) SF_(6) is known but SCl_(6) is not. Reason (R) Due to small size of F.

Assign a reason for each of the following : (I) SCl_(6) is not known but SF_(6) is known. (ii) Sulpher hexafluoride is used as a gaseous electrical insulater.

(a)Give reasons for the following : Nitric oxide becomes brown when released in air. (b)Ammonia acts as a ligand. Why ? ( c)Assign a reason for the following: SCl_(6) is not known but SF_(6) is known.

Identify the CORRECT statement from the following? (A) Sl_(6) is known but not SF_(6) (B) SO_(2) is acidic oxide of sulphur. (C) g-SO_(3) is one of the pure form of SO_(3) and exist as a cyclic trimer.

PRADEEP-P-BLOCK ELEMENTS -SHORT ANSWER QUESTIONS
  1. Give reason to explain why ClF(3) exists but FCl(3) does not exist.

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  2. Out of H(2)O " and " H(2)S, which one has higher bond angle and why ?

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  3. SF(6) is known but SC(6) is not. Why?

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  4. On reaction with Cl(2) phosphorus forms two types of halides 'A' and '...

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  5. In the ring test of NO(3)^(-) ion, Fe^(2+) ion reduces nitrate ion to ...

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  6. Explain why the acidity of oxoacids of chlorine increases in the order...

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  7. Explain why ozone is thermodynamically less stable then oxgen ?

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  8. P(4)O(6) reacts with water according to equation P(4)O(6)to4H(3)PO(3)....

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  9. White phosphorus reacts with chlorine and the product hydrolyses in th...

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  10. Name three oxoacids of nitrogen . Write the disproportionation reactio...

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  11. Nitric acid forms an oxide of nitrogen on reaction with P(4)O(10). Wri...

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  12. Phosphorus has three allotropic forms : (i) white phosphorus (ii) red ...

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  13. Given an example to show the effect of concentration of nitric acid on...

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  14. PCl(5) reacts with finely divided silver on heating and a white silver...

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  15. Phosphorus forms a number of oxoacids. Out of these oxoacids, phosphin...

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  16. Name the elements of group 15. What is their valence shell electronic ...

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  17. List the various oxidation states of nitrogen and give example of a co...

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  18. Write the shapes of the hydrides of group 15 elements. Arrange them in...

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  19. Account for the following observations : (i) NH(3) has higher boilin...

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  20. Anomalous behaviour of nitrogen is due to.

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