MCQ
The least active halogen with hydrogen is
- A$Cl$
- ✓$I$
- C$Br$
- D$F$
✓
Answer
Correct option: B.
$I$
b
(b) As the electronegativity decreases reactivity also decreases.
(b) As the electronegativity decreases reactivity also decreases.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The correct order of magnetic moments (spin only values in $B.M.$) among is
→(Atomic nos. $Mn = 25,\,Fe = 26,\,Co = 27$)
$0.05 \mathrm{~cm}$ thick coating of silver is deposited on a plate of $0.05 \mathrm{~m}^2$ area. The number of silver atoms deposited on plate are__________ $\times 10^{23}$. (At mass Ag $\left.=108, \mathrm{~d}=7.9 \mathrm{~g} \mathrm{~cm}^{-3}\right)$
→Product $(B)$ of the above reaction is
→Which pair of elements can from multiple bond with itself and oxygen?
Which of the following compound have magnetic moment $\sqrt {15}\, B.M.$ ?
→Match the electronic configurations in List-$I$ with appropriate metal complex ions in List-$II$ and choose the correct option.
→[Atomic Number: $\mathrm{Fe}=26, \mathrm{Mn}=25, \mathrm{Co}=27$ ]
| List-$I$ | List-$II$ |
| ($P$) $ t_{2 g}^6 e_g^0$ | ($1$)$\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ |
| ($Q$) $t_{2 g}^3 e_g^2$ | ($2$) $\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ |
| ($R$) $e^2 t_2^3$ | ($3$)$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ |
| ($S$) $t_{2 g}^{+} e_g^2$ | ($4$)$\left[\mathrm{FeCl}_4\right]^{-}$ |
| $\left[\mathrm{CoCl}_4\right]^{2-}$ |
$A + H_2O \to B + HCl, B + H_2O \to C + HCl,$ Compound $(A), (B)$ and $(C)$ will be respectively
→The activation energy of a reaction can be determined from the slope of which of the following graphs ?
Which of the following ${{S}_{{{N}^{2}}}}$ reaction is the slowest ?
→The pair of complex compounds $\left[ {Cr{{\left( {{H_2}O} \right)}_6}C{l_3}} \right]$ and $\left[ {Cr{{\left( {{H_2}O} \right)}_5}Cl} \right]C{l_2}{H_2}O$ are an example of
→