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The electronic configuration of four elements are :(I) [Kr]5s1 (II) [Rn]5f146d17s2 (III) [Ar]3d104s24p5 (IV) [Ar]3d64s2 Consider the following statements :(i) I shows variable oxidation state(ii) II is a d-block element(iii)The compound formed between I and III is covalent(iv) IV shows single oxidation stateWhich statement is True (T) or False (F)?

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a

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b

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c

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d

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answer is D.

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Detailed Solution

(I) [Kr]5s1, shows only single oxidation state +1 (II) [Rn]5f146d17s2, it is f-block element (Z=103) (III) The compound formed between I and III is ionic. (IV) [Ar]3d64s2,(Z=26)Fe shows variable oxidation state.

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The electronic configuration of four elements are :(I) [Kr]5s1 (II) [Rn]5f146d17s2 (III) [Ar]3d104s24p5 (IV) [Ar]3d64s2 Consider the following statements :(i) I shows variable oxidation state(ii) II is a d-block element(iii)The compound formed between I and III is covalent(iv) IV shows single oxidation stateWhich statement is True (T) or False (F)?