MCQ
A group of atoms can function as a ligand only when
- AIt is a small molecule
- ✓It has an unshared electron pair
- CIt is a negatively charged ion
- DIt is a positively charged ion
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Here $W, Y$ and $Z$ are left, up and right elements with respect to the element $'X'$ and $'X'$ belongs to $16^{th}$ group and $3^{rd}$ period. Then according to given information the incorrect statement regarding given elements is
$A\, \rightleftharpoons \,B$ ${K_C} = 2$
$B\, \rightleftharpoons \,C$ ${K_C} = 3$
$C\, \rightleftharpoons \,D+E$ ${K_C} = 5$
$K_C$ for the reaction $A\, \rightleftharpoons \,D+E$ is
| Acid | $K_a$ |
| $HCN$ | $6.2\times 10^{-10}$ |
| $HF$ | $7.2\times 10^{-4}$ |
| $HNO_2$ | $4.0\times 10^{-4}$ |
Correct order of increasing base strength of the base $CN^-,F^-$ and $NO_2^-$ will be
