MCQ
Examine the following common chemical structures to which simple functional groups are often attached Which of these systems have essentially planar geometry


- A$(i)$ and $(v)$
- B$(ii)$ and $(iii)$
- C$(ii)$, $(iii)$ and $(iv)$
- D$(iv)$

$(v)$ Both the carbon are $s{p^2}$ hybridized. Therefore planar.
$C{{H}_{2}}=C\begin{matrix}
/ \\
\backslash \\
\end{matrix}_{H}^{H}$
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$S{O_2} + N{O_2} \rightleftharpoons S{O_3} + NO$
If we take one mole of each of four gases in one $L$ container. What would be equilibrium concentration of $NO$ and $NO_2$ respectively

Assertion $A$ : Energy of $2 s$ orbital of hydrogen atom is greater than that of $2\,s$ orbital of lithium.
Reason $R$ : Energies of the orbitals in the same subshell decrease with increase in the atomic number.
In the light of the above statements, choose the correct answer from the options given below.