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
$H^2$ does not show litmus test. From this, we can say, that the oxide of hydrogen is _______ in nature.
→Identify redox reaction among the following:
Which of the following reaction does not give Alkyne
$7.5$ grams of a gas occupy $5.8$ litres of volume at $STP$ the gas is
→The standard enthalpies of formation of $CO _2( g ), H _2 O ( l )$ and glucose$(s)$ at $25^{\circ} C$ are $-400 \ kJ / mol ,-300 \ kJ / mol$ and $-1300 \ kJ / mol$, respectively. The standard enthalpy of combustion per gram of glucose at $25^{\circ} C$ is
→The $IUPAC$ name of the following compound is :
→When a solid is converted into liquid, entropy
Decreasing order of heat evolved upon catalytic hydrogenation of given reactants with a $H_2\, (Pd/C)$ is
→$Ca + C\xrightarrow[\Delta ]{}A\xrightarrow{{{H_2}O}}B\xrightarrow[{cyclic\,polymerisation}]{}C$
→Product $B$ and $C$ are respectively
Which of the following statements is not correct for an electron that has the quantum numbers $n = 4$ and $m = 2$
→