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Which one among group - 17 elements is...

Which one among group - 17 elements is radioactive ?

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Astatine (AT)
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-VERY SHORT ANSWER TYPES (VSA )
  1. Which is used as an oxoacid of sulphur which contains a peroxo bo...

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  2. Which gas is used for determining the position of double or trip...

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  3. Which one among group - 17 elements is radioactive ?

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  4. Which halogen exhibits electropositive character in some in its ...

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  5. Fluorine does not show any +ve oxidation state - why ?

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  6. Which one of the hydrogen halides is a liquid at ordinary temperatu...

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  7. Arrage the halogens in the order of decreasing negative electron ...

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  8. Arrage the halogens in the order of decreasing negative electron ...

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  9. Arrage the hydrogen halides in ther order of increasing reducin...

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  10. Arrage the hydrogen halides in the order of increasing thermal sta...

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  11. Chlorine -water on standing loses its yellow colour - why ?

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  12. Which halogen hydracid cannot be stored in a glass bottle ? Why ?

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  13. Which halogen form only one oxacid ?

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  14. HF is the weakest halogen hydracid even though fluorine is the mos...

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  15. Write the compound of bleacing powder and mention its two impor...

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  16. Which hydrogen halide froms HX(2)^(-) ions ? Why ?

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  17. Arrage F(2), CI(2), Br(2) and I(2) in the order of increasing bon...

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  18. Give two exapmle of interhalagone cation and two of interhalogen ...

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  19. Name the substance obtained at the cathode and at the anode when...

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  20. Why is iodine more soluble in KI solution than in water ?

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