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On combustion in excess ofd air, lithium...

On combustion in excess ofd air, lithium forms

A

normal oxides

B

peroxides

C

superoxides

D

both (1) and (2)

Text Solution

Verified by Experts

The correct Answer is:
A
Li forms mainly the oxide, `Li_(2)O` (plus some peroxide), Na forms the peroxide, `Na_(2)O ("plus some" Na_(2)O)`, whilst K, Rb, and Cs form the superoxides, `MO_(2)`.
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R SHARMA-THE S BLOCK ELEMENTS-Follow-up Test 4
  1. Which of the following is correct for monoxides (normal oxides) of alk...

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  2. On combustion in excess ofd air, lithium forms

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  3. Which of the following in incorrect for the hydroxides of alkali metal...

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  4. All alkali metal peroxides contain the [-O-O]^(2-) ion. They are

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  5. All alkali metal superoxides contain the ion [O(2)]. They are

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  6. The alkali metal halides (MX) are all high melting, colorless crystall...

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  7. Alkali metal halides have high negative enthalpies of formation. The D...

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  8. The magnitude of enthalphy of formation of alkali metal halides decrea...

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  9. Which of the following is soluble in organic solvents like ethanol ?

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  10. Which of the following has the maximum melting point but minimum solub...

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  11. Which of the following is the correct order of hyrated ionic radii ?

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  12. Which of the following compounds is almost insoluble in water ?

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  13. The melting and boiling points of alkali metal halides always follow t...

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  14. Which of the following are oxosalts ? (i) Carbonates , (ii) Nitrates...

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  15. Which of the following is nott true?

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  16. Which of the following alkali metal carbonates doesnot existin the sol...

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  17. Sodium bicarbonate (NaHCO(3)) on gentle heting produces

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  18. Which of the following has the maximum solubility in water?

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