MCQ
All those elements belong to $ f - $ block whose atomic numbers are
- A$58$ to $71$
- B$90$ to $ 103$
- ✓Both $(a)$ and $(b)$
- DNone
✓
Answer
Correct option: C.
Both $(a)$ and $(b)$
c
(c) $58 $ to $71 $ and $ 90$ to $ 103$ (Lanthanides & actinides).
(c) $58 $ to $71 $ and $ 90$ to $ 103$ (Lanthanides & actinides).
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
Which of the following reactions will not produce a racemic product ?
Degree of ionisation of a solution depends upon
Which of the following order is incorrect ?
An elementary reaction between $A$ and $B$ is a second order reaction. Which of the following rate equations must be correct?
→Thiamine and pyridoxine are also known respectively as :
(image) $\xrightarrow{{B{r_2}/hv}}$ $\mathop {Major}\limits_{\left( X \right)} \xrightarrow[{KOH/\Delta }]{{Alcoholic}}\mathop {Major}\limits_{\left( Y \right)} $$\xrightarrow[{Peroxide}]{{H - Br}}\mathop {Major}\limits_{\left( Z \right)} $
→Major final product $(Z)$ is
In the cell $Pt(s)| H_2 (g,1\,bar)| HCl(aq)| AgCl(s)| Ag(s)| Pt(s)$ the cell potential is $0.92\,V$ when a $10^{-6}$ molal $HCl$ solution is used. The standard electrode potential of $(AgCl / Ag,Cl^- )$ electrode is ............. $\mathrm{V}$ $\left\{ {Given,\frac{{2.303RT}}{F} = 0.06\,V\,at\,298\,K} \right\}$
→$2Ca{C_2}\xrightarrow{{{H_2}O}}X\xrightarrow{{C{u_2}C{l_2} + NH{_4}Cl}}Y$ ; $Y$ is
→The boiling points of noble gases are illustrative of the operation of forces of the type
Of the following configurations, the optical isomers are
