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Which elements are also known as chalco...

Which elements are also known as chalcogens ? Why ?

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The elements of group - 16 (oygen family) are called chalcogens ( meaing ore forming elements) because many metal ores occur as oxides and sulphides.
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-VERY SHORT ANSWER TYPES (VSA )
  1. Arrange N(2)O(5), N(2)O(3) and N(2)O(4) in the order of increasing...

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  2. Among the group - 16 elements ,which one is a typical metal and ...

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  3. Which elements are also known as chalcogens ? Why ?

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  4. Name the two elements of group -16 which are metalloids and phot...

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  5. Out of N and O which one has a higher Delta(i) H(l) ? Why ?

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  6. Which one of the group - 16 elements has the lowest negative elec...

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  7. Out of CS(2) and Cse(2) which one less stable ? Why ?

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  8. Sulphur has a stronger tendency for catenation than oxygen - why ...

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  9. Arrage H(2)S,H(2)O and H(2)Se in the order of increasing bond an...

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  10. Give example of two compounds in which oxidation state of oxygen ...

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  11. In which compound an element exhibits its highest oxidation sta...

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  12. Why does stability of +6 oxidation state decrease down the grou...

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  13. Arrage the group - 16 hydrides in the order of increasing acidic ...

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  14. Out of H(2)O and H(2)S which one has a higher thermal stability...

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  15. Comment on the nature of two S = O bonds is SO(2).

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  16. What is the geometery of SCI(2) ? Why ?

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  17. Out of SF(6) and TeF(6) , which one does not undergo hydrolysis ?w...

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  18. OF(6) has no existence - why ?

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  19. Sulphur disappears when boiled with an aqueous solution of Na(2)SO(...

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  20. What happens when H(2)S is allowed to burn in a limited supply ...

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