MCQ
$PbI_4$ does not exist because
- Aiodine is not a reactive
- ✓$Pb(IV)$ is oxidizing and $I^-$ is strong reducing agent
- C$Pb(IV)$ is less stable than $Pb(II)$
- D$Pb^{4+}$ is not easily formed
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$(1)$ $n = 1,\,l = 0,\,m = 0$
$(2)$ $n = 2,\,l = 0,\,m = 0$
$(3)$ $n = 2,\,l = 1,\,m = 1$
$(4)$ $n = 3,\,l = 2,\,m = 0$
$(5)$ $n = 3,\,l = 2,\,m = 0$
$S _{8( s )}+ a OH ^{-}_{( aq )} \rightarrow b S ^{2-}_{( aq )}+ c S _{2} O _{3}{ }^{2-}{ }_{( aq )}+ d H _{2} O _{(\ell)}$
The values of $'a'$ is ............ (Integer answer)
$X$ and $Y$ respectively are :-