A) \[{{H}_{2}}{{O}_{2}}\]
B) \[C{{O}_{2}}\]
C) \[{{H}_{2}}O\]
D) \[O{{F}_{2}}\]
Correct Answer: D
Solution :
In \[O{{F}_{2}}\] oxidation number of oxygen is \[+2\] eg suppose oxidation number of oxygen = x oxidation number of \[F=-1\] \[x+2\times (-1)=0\] \[x=+2\] Oxidation number of oxygen in other given species is as follows: \[{{H}_{2}}{{O}_{2}};2\times (+1)+2x=0\] \[2x=-2\] \[x=-1\] \[C{{O}_{2}};\] \[4+2x=0\] \[2x=-4\] \[x=-2\] \[{{H}_{2}}O;\] \[2\times (+1)+x=0\] \[x=-2\]
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