MCQ
Which of the following hydrides has the largest bond angle?
- A$H _{2} S$
- B$H _{2} Te$
- ✓$H _{2} O$
- D$H _{2} Se$
hence $H _2 O$ has the highest bond angle.
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$Fe ^{2+}( aq )+ S ^{2-}( aq ) \rightleftharpoons FeS ( s )$
When equal volumes of $0.06 M Fe ^{2+}( aq )$ and $0.2 M S ^{2-}( aq )$ solutions are mixed, the equilibrium concentration of $Fe ^{2+}$ (aq) is found to be $Y \times 10^{-17} M$. The value of $Y$ is. . . . .
$(i)$ they are polymers with hydrophobic character
$(ii)$ they are biocompatible
$(iii)$ in general, they have high thermal stability and low dielectric strength
$(iv)$ usually they are resistant to oxidation and used as greases.