Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air?

  • Option 1)

    Rb

  • Option 2)

    K

  • Option 3)

    Li

  • Option 4)

    Na

 

Answers (1)

Li form normal oxide with air, Na from peroxide  where as K, Rb & Cs form superoxide


Option 1)

Rb

This option is incorrect

Option 2)

K

This option is incorrect

Option 3)

Li

This option is correct

Option 4)

Na

This option is incorrect

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