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Name a member of the lanthanoid series w...

Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state.

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Name the following: (a) A transition metal which does not exhibit variation in oxidation state in its compounds. (b) A compound where the transition metal is the +7 oxidation state. (c) A member of the lanthanoid series which is well known to exhibit +4 oxidation state. (d) Ore used in the preparation of Potassium dichromate.

(i) Which transition element in 3d series has positive E_(M^(2+//)M)^(@) value and why ? (ii) Name a member of lanthanoid series which is well known to exhibit to exhibit +4 oxidation state and why? (b) Account for the following : (i) The highest oxidation state is exhibited in oxoanions of transition metals. (ii) HCl is not used to acidify KMnO_(4) solution. (iii) Transition metals have high enthalpy of atomisation.

Name the member of the lanthanoids series which exhibit+4 oxidation states and those which exhibit+2 oxidation state. Try to correlate this types of behavior with the electronic configuration of these elements.

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Which of the following exhibits only +3 oxidation state?

Which of the following exhibits only +3 oxidation state?

Which element of group 13 exhibits +1 oxidation state

Oxygen exhibits positive oxidation state in

Transition elements exhibit _____ oxidation states.

Elements of group 14 exhibit oxidation state of

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