MCQ
The elements $X,\,Y$ and $Z$ forms oxides which are acidic, basic and amphoteric respectively, then correct order of their electronegativities is
- A$X > Y > Z$
- B$Z > Y > X$
- ✓$X > Z > Y$
- D$Y > X > Z$
hence $EN$ of $X$ is maximum
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| Pressue $(mm\, Hg)$ | $50$ | $100$ | $200$ |
| Half-life period $(hrs.)$ | $3.52$ | $1.76$ | $0.88$ |
What will be the pressure when the half-life period is $2.5$ hours
$[Fe(CN)_6]^{4-} \rightarrow [Fe(CN)_6]^{3-} + e^{-1}\, ;$ $ E^o = -0.35\, V$
$Fe^{2+} \rightarrow Fe^{3+} + e^{-1}\ ;$ $E^o = -0.77\, V$