MCQ
Thallium shows different oxidation states because
  • A
    It is a transition metal
  • Of inert-pair effect
  • C
    Of its high reactivity
  • D
    Of its amphoteric character

Answer

Correct option: B.
Of inert-pair effect
b
It’s Obvious.
 

Need a full question paper?

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

Start Generating Free

Similar questions

Two soluble salts of iron $A$ & $B$ , on combining with excess of a reagent $(R)$  reduces compound $C$(Pale yellow) & $D$ (yellow) respectively. Reaction of $A$ with $D$ and that of $B$ with $C$  both produce a blue coloured compound.

Which of the following statement would be correct?

${H_2}(g) + C{l_2}(g)\,\, \to \,\,2HCl(g)\,.\,\Delta H = - 44\,kcal$

$2Na(s) + 2HCl(g)\,\, \to \,\,2NaCl(s) + {H_2}(g),$$\Delta H = - 152\,kcal$ For the reaction $Na(s) + \frac{1}{2}C{l_2}(g)\,\, \to \,\,NaCl(s),\,\Delta H = $ .....$kcal$

If the enthalpy of formation and enthalpy of solution of $HCl\, (g)$ are $-92.3\, kJ/mol$ and $-75.14\,kJ/mol$ respectively then find enthalpy of formation of $Cl^-(aq)$ [Assume $\Delta H_{f(H^+)} = 0$] .....$kJ/mol$
In the reaction $PCl_5(g)  \rightleftharpoons  PCl_3(g) + Cl_2(g)$ a graph in plotted to show the variation of rate of forward and backward reactions against time. Which of the following is correct ?
The equlilibrium constant for the following general reaction is $10^{30}$ . Calculate $E^o$ for the cell at $298\,K$ ............ $\mathrm{V}$

$2X_2(s) + 3Y^{2+} (aq) \to 2X_2^{3+}(aq) + 3Y(s)$

In which of the following reaction, the value of ${K_p}$ will be equal to ${K_c}$
The heat change for the reaction ${H_2} + \frac{1}{2}{O_2} \to {H_2}O$ is called
How many sigma bonds are in a molecule of diethyl ether, $C_2H_5OC_2H_5$ ?
Correct electron affinity order is
The maximum possible denticities of a ligand given below towards a common transition and inner -transition metal ion, respectively, are