Redox Reactions And Electrochemistry Ques 440

Question: The oxidation number and the electronic configuration of sulphur in $ H_2SO_4 $ is [KCET 2002]

Options:

A) + 4; $ 1s^{2}2s^{2}2p^{6}3s^{2} $

B) + 2; $ 1s^{2}2s^{2}2p^{6}3s^{2}3p^{2} $

C) + 3; $ 1s^{2}2s^{2}2p^{6}3s^{2}3p^{1} $

D) + 6; $ 1s^{2}2s^{2}2p^{6} $

Show Answer

Answer:

Correct Answer: D

Solution:

$ H_2\overset{*}{\mathop{SO_4}}, $ $ 2\times (+1)+x+4\times (-2)=0 $ $ +2+x-8=0 $ ; $ x=8-2=+6 $ Electronic configuration of sulphur in $ H_2SO_4 $ is $ 1s^{2},2s^{2},2p^{6} $ .



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