JEE MainChemistryPeriodic Table and PeriodicityMCQ+4 / −1
In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical? (A) Rb and Cs (B) Na and K (C) Ar and Kr (D) I and At Choose the correct answer from the options given below :
- A(A) and (B) only
- B(B) and (C) only
- C(A) and (C) only
- D(C) and (D) only
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