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The elements which show both positive an...

The elements which show both positive and negative oxidation states. i) N ii) H iii) O iv) F

A

i, ii, iii

B

iii and iv

C

ii and iv

D

only iv

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The correct Answer is:
A
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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2B
  1. The ionisation energy and electron affinity of an element are 13.0ev a...

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  2. If the ionisation energy and electron affinity of an element are 275 a...

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  3. The elements which show both positive and negative oxidation states. i...

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  4. Match the following two lists given below in view of higest oxidation ...

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  5. Strongest reducing agent and strongest oxidising agent are respectivel...

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  6. Which of the following statement is correct

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  7. The radius of La^(3+) (Z=57) is 1.06A^(@). Which one of the following ...

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  8. (A): According to Mendeleeff atomic weight of 'Be' is 9.1 but experime...

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  9. Chloride of an element A gave a neutral solution in water. In the peri...

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  10. Which one of the following relations is correct with respect to first ...

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  11. The incorrect statement among the following is

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  12. The decreasing order of second ionisation potential of K, Ca, Ba is

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  13. For four elements the IP2 curve is shown. In the graph the elements re...

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  14. Regarding ionization potential some statement are given a) Ionizati...

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  15. The electron affinity values(in KJ "mole"^(-1)) of three halogens x, y...

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  16. Regarding electronegativity i) The element with maximum electro nega...

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

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  18. Match the following in view of highest values

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  19. The atomic numbers of elements A, B, C and D are Z1, Z, Z + 1 and 2 + ...

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  20. Larger number of oxidation states are exhibited by the actinoids than ...

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