MCQ
The elements in which $s$ and $p$-orbitals are present
- ACommon elements
- ✓Inert gases
- CHalogens
- DTransitional elements
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Assertion $A$: Helium is used to dilute oxygen in diving apparatus.
Reason $R:$ Helium has high solubility in $O _2$.
In the light of the above statements, choose the correct answer from the options given below

$(I)\,\, AgNO_3$
$(II)\,\, CaCO_3$
$(III) \,\,Pb(NO_3)_2$
$(IV) \,\,Na_2CO_3$
