Identify the correct relationship regarding second Ionization enthalpy of the given elements.
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a
Na < Ne
b
Li < Na
c
Ar < K
d
Na < K
answer is C.
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Detailed Solution
The second ionization enthalpy value of 1st group element is higher than that of preceding noble gas element. This is because second electron of an alkali metal atom has to be removed from a noble gas configuration.