MCQ
Correct order of polarising power is
- ✓$C{s^ + } < {K^ + } < M{g^{2 + }} < A{l^{3 + }}$
- B${K^ + } < C{s^ + } < M{g^{2 + }} < A{l^{3 + }}$
- C$C{s^ + } < {K^ + } < A{l^{3 + }} < M{g^{2 + }}$
- D${K^ + } < C{s^ + } < A{l^{3 + }} < M{g^{2 + }}$
✓
Answer
Correct option: A.
$C{s^ + } < {K^ + } < M{g^{2 + }} < A{l^{3 + }}$
a
According to Fajan's rule, higher the charge on the cation, more is its polarizing power. The next factor which is considered is the size of the cation. Smaller the size of the cation, higher is its polarizing power. Hence, the order of polarizing power is $Cs ^{+}\,<\, K ^{+}\,<\, Mg ^{2+}\,<\, Al ^{3+}$.
According to Fajan's rule, higher the charge on the cation, more is its polarizing power. The next factor which is considered is the size of the cation. Smaller the size of the cation, higher is its polarizing power. Hence, the order of polarizing power is $Cs ^{+}\,<\, K ^{+}\,<\, Mg ^{2+}\,<\, Al ^{3+}$.
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
${image}$
→The above reaction requires which of the following reaction conditions ?
Determination of the molar mass of acetic acid in benzene using freezing point depression is affected by
Compound $\mathrm{A}, \mathrm{C}_{8} \mathrm{H}_{10} \mathrm{O},$ is found to react with $\mathrm{NaOI}$ (produced by reacting $Y$ with $NaOH$) and yields a yellow precipitate with characteristic smell.
→$\mathrm{A}$ and $\mathrm{Y}$ are respectively
$C{H_2} = CH - {(C{H_2})_5}COOH\mathop {\xrightarrow{{{\text{Peroxide}}}}}\limits_{HBr} Z$ where $Z$ is
→The total number of lone pairs of electrons in $N _2 O _3$ is
→The wave number of last line of Lyman series of atomic spectrum of $H$ atom correspond to :-
→Most reactive for decarboxylation is
Glycerol has strong intermolecular bonding therefore it is
For a sample of perfect gas when its pressure is changed isothermally from $p_i$ to $p_f$, the entropy change is given by
→$4\,g$ $NH_4NO_3$ were dissolved in $196\, g$ water at constant pressure in calorimeter with heat capacity $160\,J\,K^{-1}$. The temperature fell by $1.3\, K$. Specific heat of solution is $4.2\, J\,K^{-1}\,g^{-1}$. Enthalpy of solution of $NH_4NO_3$ is.......$ kJ\, mol^{-1}$
→