MCQ
Which of the following ions is paramagnetic
- A$C{u^ + }$
- B$Z{n^{ + 2}}$
- ✓$T{i^{ + 3}}$
- D$T{i^{ + 4}}$

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$\mathrm{SO}_3, \mathrm{H}_2 \mathrm{SO}_3, \mathrm{SOCl}_2, \mathrm{SF}_4, \mathrm{BaSO}_4, \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7$
$($ given $=$ Atomic number of $\mathrm{Ni}: 28)$
| List $I$ (Amines) | List $II$ $\left( pK _{ b }\right)$ |
| $A$ Aniline | $I$ $3.25$ |
| $B$ Ethanamine | $II$ $3.00$ |
| $C$ $N-$Ethylethanamine | $III$ $9.38$ |
| $D$ $N, N-$Diethylethanamine | $IV$ $3.29$ |
Choose the correct answer from the options given below :-