Among the elements of group $16$,which element exists in a metallic lattice in its monoatomic state and also exhibits two crystalline forms,$\alpha$ and $\beta$?
- A$Po$
- B$S$
- C$Se$
- D$Te$
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Similar Questions
Match the following items of List-$I$ with those in List-$II$ and choose the correct option.
List-$I$ List-$II$ $(a) \ [S_2 O_3]^{2-}$ $(I)$ Paramagnetic $(b) \ H_2 O_2$ $(II)$ Toxic gas $(c) \ H_2 S$ $(III)$ Strong reducing agent $(d) \ S_2$ $(IV)$ Disproportionate in presence of $Mn^{2+}$
| List-$I$ | List-$II$ |
|---|---|
| $(a) \ [S_2 O_3]^{2-}$ | $(I)$ Paramagnetic |
| $(b) \ H_2 O_2$ | $(II)$ Toxic gas |
| $(c) \ H_2 S$ | $(III)$ Strong reducing agent |
| $(d) \ S_2$ | $(IV)$ Disproportionate in presence of $Mn^{2+}$ |
Chalcogen group elements are:
Among the hydrides of group $16$ elements,the hydride $X$ has the lowest boiling point and the hydride $Y$ has the highest boiling point. $X$ and $Y$ respectively are:
When conc. $H_{2}SO_{4}$ is heated with $P_{2}O_{5}$,the acid is converted into
DifficultKCET 2007
View SolutionStatement $(A)$ Sulphur vapour is paramagnetic. Statement $(B)$ Reaction of dil. $HCl$ with finely divided iron forms $FeCl_3$ and $H_2$ gas. The correct answer is
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