- A$1{s^2}$
- B$1{s^2},\,\,2{s^2}\,2{p^2}$
- ✓$1{s^2},\,\,2{s^2}\,2{p^5}$
- D$1{s^2},\,\,2{s^2}\,2{p^6}$
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Statement $I:$ According to Bohr's model of hydrogen atom, the angular momentum of an electron in a given stationary state is quantised.
Statement $II:$ The concept of electron in Bohr's orbit, violates the Heisenberg uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below:

$ 2 \mathrm{~S}_2 \mathrm{O}_3^{2-}+\mathrm{I}_2 \rightarrow \mathrm{S}_4 \mathrm{O}_6^{2-}+2 \mathrm{I}^{-}$
$\mathrm{S}_2 \mathrm{O}_3^{2-}+5 \mathrm{Br}_2+5 \mathrm{H}_2 \mathrm{O} \rightarrow 2 \mathrm{SO}_4^{2-}+4 \mathrm{Br}^{-}+10 \mathrm{H}^{+}$
Which of the following statement justifies the above dual behaviour of thiosulphate?