MCQ
Inert pair effect is predominant in
- A$Si$
- ✓$Pb$
- C$Ge$
- D$Sn$
✓
Answer
Correct option: B.
$Pb$
b
Inert pair effect is the name given to tendency of electrons present in the outer most s sub shell of post-transition metals, like $\mathrm{Pb}$, Bi etc. to not undergo ionisation, and to remain unshared.
Inert pair effect is the name given to tendency of electrons present in the outer most s sub shell of post-transition metals, like $\mathrm{Pb}$, Bi etc. to not undergo ionisation, and to remain unshared.
This is most stated in Groups 13,14 and 15
A possible given explanation is that due to presence of f-subshell electrons are to diffused, due to the shape of the forbitals, to effectively shield the s electrons from the pull of the nucleus.
A good example would be the elements of Group $13 .$ Aluminium in +1 state is unknown, and the stability of +1 oxidation state increases as we go down the group.
Thallium is most stable in +1 oxidation state, and compounds of Thallium in +3 oxidation state are known to be very strong oxidising agents, and have a tendency to reduce quickly to +1 state.
Hence option B is correct.
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
Transitional elements are named transition elements because their characters are
In a pseudo first order hydrolysis of ester in water, the following results were obtained
→| $t/s$ | $0$ | $30$ | $60$ | $90$ |
| $ Ester/$ $mol\,L^{-1}$ | $0.55$ | $0.31$ | $0.17$ | $0.085$ |
What will be the average rate of reaction between the time interval $30$ to $60\, seconds$ ?
Chlorine acts as a bleaching agent only in presence of
Which of the following is the correct electronic formula of chlorine molecule
Which of the following sulphides is yellow in colour
On reduction with hydrogen, $3.6 \,g$ of an oxide of metal left $3.2 \,g$ of metal. If the vapour density of metal is $32$, the simplest formula of the oxide would be
→If $x$ is specific resistance (in $S^{-1}\,cm$) of the electrolyte solution and $y$ is the molarity of the solution, then ${\Lambda _m}$ (in $S \,cm^2\, mol^{-1}$) is given by
→The molar conductivity of $0.007 \,\mathrm{M}$ acetic acid is $20 \, \mathrm{~S} \, \mathrm{~cm}^{2} \,\mathrm{~mol}^{-1}$. What is the dissociation constant of acetic acid? (In $\times 10^{-5} \,\mathrm{~mol} \,\mathrm{~L}^{-1}$)
→$[\Lambda_{\mathrm{H}^{+}}^{\circ}=350 \,\mathrm{~S}\, \mathrm{~cm}^{2}\, \mathrm{~mol}^{-1},\Lambda_{\mathrm{CH}_{3} \mathrm{COO}^{-}}^{\circ}=50\, \mathrm{~S}\, \mathrm{~cm}^{2}\, \mathrm{~mol}^{-1}]$
In the enolization of the given molecule, the $H$ -atom involved is
→Which of the following complexes show six coordination number