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The paramagnetic species is -...

The paramagnetic species is -

A

`KO_(2)`

B

`SiO_(2)`

C

`TiO_(2)`

D

`BaO_(2)`

Text Solution

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The correct Answer is:
A
`KO_(2) rarr K^(+) O_(2)^(-2) O_(2)^(-1)` [Superoxide ion] paramagnetic
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. The correct sequence of increasing covalent character is represented b...

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  2. The paramagnetic species is -

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  3. On dissolving moderate amount of sodium metal in liquid NH(3) at low t...

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  4. Which of the following gives propyne on hydrolysis?

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  5. The pairr of amphoteric oxides is

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  6. The pair whose both species are used in antacid medicinal preparation...

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  7. Which of the following oxides is not expected to reast with sodium hyd...

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  8. A compound X on heating gives a colourless gas. The residue is dissolv...

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  9. Property of the alkaline earth metals that increases down the group w...

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  10. Which of the following compounds has the lowest meting point?

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  11. Match List-I with List-II for the composition of substances and select...

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  12. Which of the following statements is incorrect

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  13. Which of the following is not hygroscopic-

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  14. The compound which does not exist as hydrate form

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  15. Bleaching powder does not contain:

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  16. Sodium sulphate is soluble in water whereas barium sulphate is sparing...

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  17. The minimum equivalent conductane in fused state is shown by :-

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  18. Sodium hydroxide is manufacture by the electrolysis of brine solutio...

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  19. Sodium carbonate is manufactured by Solvay process. The products that ...

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  20. Which of the following does not illustrate the anomalous properties of...

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