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

Question

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 (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

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

Q. The number of alkali metal(s), from $L i, K, C s, R b$ having ionization enthalpy greater than $400 k J m o l^{- 1}$ and forming stable super oxide is

$K, R b$ and $C s$ form stable super oxides but $C s$ has ionisation enthalpy less than $400 k J$ .

Q. The number of alkali metal(s), from Li,K,Cs,Rb having ionization enthalpy greater than 400kJmol−1 and forming stable super oxide is

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

Q. The number of alkali metal(s), from $L i, K, C s, R b$ having ionization enthalpy greater than $400 k J m o l^{- 1}$ and forming stable super oxide is

$K, R b$ and $C s$ form stable super oxides but $C s$ has ionisation enthalpy less than $400 k J$ .