1. Tardigrade
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  3. Chemistry
  4. The number of alkali metal(s), from Li, K, Cs, Rb having ionization enthalpy greater than 400 kJ mol -1 and forming stable super oxide is

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Q. The number of alkali metal(s), from $Li, K, Cs, Rb$ having ionization enthalpy greater than $400\, kJ\,mol ^{-1}$ and forming stable super oxide is

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Solution:

$K, Rb$ and $Cs$ form stable super oxides but $Cs$ has ionisation enthalpy less than $400 \,kJ$.