$Q\,\left( {1{s^2},\,\,2{s^2}\,2{p^6},\,\,3{s^1}} \right);\,\,R\,\left( {1{s^2},\,\,2{s^2}\,2{p^2}} \right)$The element that would most readily form a diatomic molecule is
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| List-$I$ (Elements) | List-$II$(Properties in their respective groups) |
| $A$ $\mathrm{Cl}, \mathrm{S}$ | $I$ Elements with highest electronegativity |
| $B$ $\mathrm{Ge}, \mathrm{As}$ | $II$ Elements with largest atomic size |
| $C$ $\mathrm{Fr}, \mathrm{Ra}$ | $III$ Elements which show properties of both metals and non metal |
| $D$ $\mathrm{F}, \mathrm{O}$ | $IV$ Elements with highest negative electron gain enthalpy |
Choose the correct answer from the options given below :
$\,\left( {1{s^2},\,\,2{s^2}\,2{p^6},\,\,3{s^1}} \right);\,\,R\,\left( {1{s^2},\,\,2{s^2}\,2{p^6},\,\,3{s^2}} \right)$The formula of ionic compounds that can be formed between these elements are