MCQ
The formula of ferrocene is
- A${\left[ {Fe{{(CN)}_6}} \right]^{4 - }}$
- B${\left[ {Fe{{(CN)}_6}} \right]^{3 - }}$
- C$\left[ {Fe{{(CO)}_5}} \right]$
- ✓$\left[ {{{\left( {{C_5}{H_5}} \right)}_2}Fe} \right]$
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(Given : $h =6.626 \times 10^{-34} Js$ )
Arrange the hydrogens $a, b, c, d$ in decreasing order of their reactivities towards chlorination
(First dissociation constant of $H _{2} CO _{3}=4.0 \times 10^{-7}$$\log 2=0.3 ;$ density of the soft $\left.\operatorname{drink}=1\, g\, mL ^{-1}\right)$