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
Aldehyde and ketones can decolourize by
${C_6}{H_5}Cl$ prepared by aniline with
→How many secondary amine are possible with molecular formula $C_4H_{11}NH_2$
→The reaction of $HBr$ with the following compound would produce
→Three moles of $B _2 H _6$ are completely reacted with methanol. The number of moles of boron containing product formed is
→The bond order of a molecule is given by
$2-$ hexene $\longrightarrow$ Products
→The two products formed in above reaction are -
If an orbital could contain $3e^-$, total groups in periodic table would have been
→Which set of terms correctly identifies the carbohydrate shown ?
→$(1)$ Pentose $(2)$ Pentulose $(3)$ Hexulose $(4)$ Hexose
$(5)$ Aldose $(6)$ Ketose $(7)$ Pyranose $(8)$ Furanose
The product of oxidation of ${I^ - }$ with $MnO_4^ - $ in alkaline medium is
→