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Determine the oxidation number of C in the following:

$bold left parenthesis bold i bold right parenthesis bold space bold C subscript bold 2 bold H subscript bold 6 bold space bold space bold space bold space bold space bold space bold space bold space bold space bold left parenthesis bold ii bold right parenthesis bold space bold C subscript bold 4 bold H subscript bold 10 bold space bold space bold space bold space bold space bold space bold space bold space bold space bold left parenthesis bold iii bold right parenthesis bold space bold CO bold left parenthesis bold iv bold right parenthesis bold space bold CO subscript bold 2 bold space bold space bold space bold space bold space bold space bold space bold space space space$

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102. Determine the oxidation number of:
(i) Mn in KMnO₄ (ii)Cr in K₂Cr₂O₇(iii) Cl in KClO₄?

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Short Answer Type

103. Assign oxidation number of the underlined elements in each of the following species:

space space space NaH subscript 2 bottom enclose straight P straight O subscript 4

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104. Assign oxidation number of the underlined elements in each of the following species:

NaH bottom enclose straight S straight O subscript 4

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105. Assign oxidation number of the underlined elements in each of the following species:
$straight H subscript 4 bottom enclose straight P subscript 2 end enclose straight O subscript 7$

Let the oxidation number of P = x
Writing the oxidation number of each atom at the top of its symbol.
+1 x - 2
H₄ P₂O₇Sum of the oxidation number of various atoms = 0
4(+1)+ 2x + 7(-2) = 0
i.e. x - 5 = 0
or x = +5