MCQ
Among the following elements, the one having the highest ionisation energy is :-
- A$(Ne) 3s^2 3p^1$
- B$(Ne) 3s^2 3p^4$
- ✓$(Ne) 3s^2p^3$
- D$(Ar) 3d^{10} 4s^2 4p^2$
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$2 Fe _{( s )}+ O _{2( g )}+4 H _{( aq )}^{+} \rightarrow 2 Fe _{( aq )}^{2^{+}}+2 H _2 O ( l ) \quad E ^{\circ}=1.67 V$, At $\left[ Fe ^{2+}\right]=10^{-3} M , P \left( O _2\right)=0.1$ atm and $pH =3$, the cell potential at $25^{\circ} C$ is
Product $(A)$ and $(B)$ is differentiated by