Work out the oxidation number of the underlined element in each of the following chemical species.

計算下列每個化學物種中畫有底線的元素的氧化數。

KHSO₄

(a)  

Work out the oxidation number of the underlined element in each of the following chemical species.

計算下列每個化學物種中畫有底線的元素的氧化數。

O₂F₂

(a)  

Work out the oxidation number of the underlined element in each of the following chemical species.

計算下列每個化學物種中畫有底線的元素的氧化數。

Na₃PO₄

(a)  

Work out the oxidation number of the underlined element in each of the following chemical species.

計算下列每個化學物種中畫有底線的元素的氧化數。

MnO₄^-

(a)  

Work out the oxidation number of the underlined element in each of the following chemical species.

計算下列每個化學物種中畫有底線的元素的氧化數。

[CuCl₄]^2-

(a)