MCQ
The elements with atomic number $10, 18, 36, 54$ and $86$ are all
- ALight metals
- ✓Inert gases
- CHalogens
- DRare-earths
✓
Answer
Correct option: B.
Inert gases
b
$(b)$ Inert gases, these have $n{s^2}n{p^6}$ configuration.
$(b)$ Inert gases, these have $n{s^2}n{p^6}$ configuration.
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
How many ions are non-polar ions ?
→$XeF_5^\Theta ,SO_3^{2 - },SO_4^{2 - },ClO_4^ - ,PO_4^{3 - },NO_2^ + $
Correct statement is
The species having no $p \pi - p \pi$ bond but has bond order equal to that of $O_2$
→Which of the following statement is correct?
If acetylene is passed through an electric arc in the atmosphere of nitrogen, the compound formed is
Negative $ER$ indicates that redox couple is:
→$8\,gm$ of $C{H_4}$ is completely burnt in air. The number of moles of water produced are $.....$
→The gas phase reaction $2NO_2(g) \rightleftharpoons N_2O_4 (g)$ is an exothermic reaction. The decomposition of $N_2O_4,$ in equilibrium mixutre of $NO_2(g)$ and $N_2O_4(g),$ can be increased by
→The correct order of decreasing basic strengths of $x, y$ and $z$ is
→Experimental evidence for the existence of the atomic nucleus comes from