Question

Which of the following gem diols is stable:

$\left(a\right)H_{3}C-\stackrel{OH}{\stackrel{|}{\underset{O{H}_3}{\underset{|}{C}}}}-H\left(b\right)B{r}_{3}C-\stackrel{OH}{\stackrel{|}{\underset{OH}{\underset{|}{C}}}}-H$
$\left(c\right)F_{3}C-\stackrel{OH}{\stackrel{|}{\underset{OH}{\underset{|}{C}}}}-H\left(d\right)H_5{C}_6-\stackrel{OH}{\stackrel{|}{\underset{OH}{\underset{|}{C}}}}-C_6{H}_5$

• A. $a$
• B. $b$
• C. $c$
• D. $d$

Answer 1

The correct option is C $c$

$\left(c\right)F_{3}C-\stackrel{OH}{\stackrel{|}{\underset{OH}{\underset{|}{C}}}}-H$
due to intra molecular hydrogen bonding.