S Block Elements Question 15
Question 15 - 31 January - Shift 2
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___________
Show Answer
Answer: (2)
Solution:
Formula: Ionisation energy ,Reaction of alkali metals with $O_2$
$K, Rb$ and $Cs$ form stable super oxides but $Cs$ has ionisation enthalpy less than $400 kJ$.
