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Which of the following statements are wr...

Which of the following statements are wrong
(I) `Bi^(3+)` is more stable than `Bi^(5+)`
(II) Mn shows `+8` oxidation state
(III) The oxidation state of an element is always less than or equal to its group number
(IV) s-block elements show variable oxidation states
The answer is

A

II and IV

B

II and III

C

I, II and III

D

II, III and IV

Text Solution

Verified by Experts

The correct Answer is:
A
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NARAYNA-PERIODIC TABLE -All Questions
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  2. The most common oxidation states of cerium are

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  3. Which of the following statements are wrong (I) Bi^(3+) is more stab...

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  4. The correct order of electropositive nature of Li,Na and K is

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  5. Which one of the following order represents the correct sequence of th...

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  6. Beryillum resembles Aluminium in properties. This is mainly due to

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  7. The chemical similarly between boron and silicon is mainly due to equa...

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  8. The frequency of the characterstic X ray of K(alpha) line of metal tar...

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  9. Which of the following does not represents the correct order of the pr...

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  10. EN of the element (A) is E(1) and EA is E(2) hence IP will be :

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  11. The correct order of atomic radii is:

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  12. In which of the following arrangements , the order is not correct acco...

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  13. Successive ionisation potentials of an element M are 8.3,25.1,37.9,259...

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  14. The IP(1),IP(2),IP(3) and IP(4) of an element A are 6.0, 10.0, 16.0 an...

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  15. H-H, X-X and H-X bond energies are 104 Kcal//"mole" 60 Kcal//"mole" a...

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  16. The ionisation energy and electron affinity of an element are 13.0ev a...

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  17. The bond energies of H-H, X-X and H-X are 104 K.cal, 38 K.cal and 138 ...

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  18. The atomic numbers of elements A,B,C and D are Z - 1, Z, Z + 1 and Z +...

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  19. M((g)) rarr M((g))^(+) +e^(-), DeltaH = 100eV M((g)) rarr M((g))^(2+...

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  20. The increasing order of the first ionization enthalpies of the element...

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