MCQ
Which of the following group of elements eliminates electron easily
- A$N, P, As$
- B$O, S, Se$
- ✓$Li, Na, K$
- D$Cl, Ba, I$
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$(a) P_2O_7^{4-}$ $(b) S_2O_5^{2-}$
$(c) S_2O_7^{2-}$ $(d) Cl_2O_7$
$(e) Mn_2O_7$ $(f) S_2O_8^{2-}$
$1.$ The compounds $\mathrm{P}$ and $\mathrm{Q}$ respectively are
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$2.$ The compound $R$ is
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$3.$ The compound $\mathrm{S}$ is
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Give the answer question $1,2$ and $3.$

$(R = 8.314 \,J/mol\,K)\,(\ln 7.5 =2.01)$