A) 4
B) 2
C) 5
D) 6
Correct Answer: B
Solution :
\[In\,\,C{{u}_{2}}S,\] | Valency factor |
\[2C{{u}^{+}}\xrightarrow{{}}\underset{+2}{\mathop{2C{{u}^{2+}}}}\,+2{{e}^{-}}\] | \[2\] |
\[{{S}_{-2}}^{2-}\xrightarrow{{}}\underset{+4}{\mathop{S{{O}_{2}}}}\,+6{{e}^{-}}\] | \[6\] |
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