MCQ
The oxidation number of hydrogen in $M{H_2}$is
- A$+ 1$
- ✓$-1$
- C$+2$
- D$-2$
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$(i)$ $Zn|Zn^{2+}\,(1\,M)||Cu^{2+}\,(1\,M)|Cu$
$(ii)$ $Zn|Zn^{2+}\,(0.1\,M)||Cu^{2+}\,(1\,M)|Cu$
$(iii)$ $Zn|Zn^{2+}\,(1\,M)||Cu^{2+}\,(0.1\,M)|Cu$
$(iv)$ $Zn|Zn^{2+}(0.1\,M)||Cu^{2+}\,(0.1\,M)|Cu$
Statement $(I)$ : Both metal and non-metal exist in $\mathrm{p}$ and $d$-block elements.
Statement $(II)$ : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals.
In the light of the above statements, choose the most appropriate answer from the option given below: