MCQ
Which configuration represents a noble gas
- A$1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}3{d^{10}}4{s^2}$
- ✓$1{s^2}2{s^2}2{p^6}3{s^2}3{p^6}$
- C$1{s^2}2{s^2}2{p^6}3{p^6}$
- D$1{s^2}2{s^2}2{p^6}3{s^2}$
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$A + D \rightleftharpoons AD,AD + D \rightleftharpoons A{D_2}$, $A{D_2} + D \rightleftharpoons A{D_3}$. Then equilibrium constant $'K'$ for $A + 3D \rightleftharpoons A{D_3}$ is related as
| List$-I$ Reaction | List$-II$ Type of redox reaction | ||
| $(A)$ | $N _{2(g)}+ O _{2(g)} \rightarrow 2 NO _{( g )}$ | $(I)$ | Decomposition |
| $(B)$ | $2 Pb\left( NO _3\right)_{2(s)} \rightarrow 2 PbO _{( s )}+4 NO _{2(g)}+ O _{2(g)}$ | $(II)$ | Displacement |
| $(C)$ | $2 Na _{( s )}+2 H _2 O _{( l )} \rightarrow 2 NaOH _{( aq .)}+ H _{2(g)}$ | $(III)$ | Disproportionation |
| $(D)$ | $2 NO_{2(g)}+2 OH_{(aq)}^{-} \rightarrow NO_{2(qq)}^{-}+NO_{3(aq)}^{-}+H_2 O_{(l)}$ | $(IV)$ | Combination |