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प्रश्न
Consider the elements: Cs, Ne, I and F
Identify the element that exhibits both positive and negative oxidation states.
उत्तर
I exhibits both positive and negative oxidation states. It exhibits oxidation states of – 1, + 1, + 3, + 5, and + 7.
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संबंधित प्रश्न
Assign oxidation numbers to the underlined element in the following species:
NaH2PO4
Assign oxidation numbers to the underlined element in the following species:
NaHSO4
Assign oxidation numbers to the underlined element in the following species:
H4P2O7
Assign oxidation numbers to the underlined elements in the following species:
K2MnO4
Assign oxidation numbers to the underlined elements in the following species:
NaBH4
Assign oxidation numbers to the underlined elements in the following species:
KAl(SO4)2.12 H2O
What are the oxidation numbers of the underlined elements in the following and how do you rationalise your results?
KI3
What are the oxidation numbers of the underlined elements in the following and how do you rationalise your results?
CH3CH2OH
Consider the elements: Cs, Ne, I and F.
Identify the element that exhibits only postive oxidation state.
In which of the following compounds, an element exhibits two different oxidation states.
The reaction \[\ce{Cl2 (g) + 2OH- (aq) -> ClO- (aq) + Cl- (aq) + H2O (l)}\] represents the process of bleaching. Identify and name the species that bleaches the substances due to its oxidising action.
Nitric acid is an oxidising agent and reacts with \[\ce{PbO}\] but it does not react with \[\ce{PbO2}\]. Explain why?
Calculate the oxidation number of sulphur atom in the following compounds:
\[\ce{Na2S4O6}\]
Match Column I with Column II for the oxidation states of the central atoms.
| Column I | Column II |
| (i) \[\ce{Cr2O^{2-}7}\] | (a) + 3 |
| (ii) \[\ce{MnO^{-}4}\] | (b) + 4 |
| (iii) \[\ce{VO^{-}3}\] | (c) + 5 |
| (iv) \[\ce{FeF^{3-}6}\] | (d) + 6 |
| (e) + 7 |
The oxidation number and covalency of sulphur in sulphur molecules (Sg) are:
In order to oxidise a mixture of one mole of each of \[\ce{FeC2O4, Fe2(C2O4)3, FeSO4 and Fe2(SO4)3}\] in acidic medium, the number of moles of KMnO4 required is ______.
Oxidation number of potassium in K2O, K2O2 and KO2, respectively, is ______.
