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| 1. |
The first `(Delta_(i)H_(1)` and second `(Delta_(i)H_(2)` ionization enthalpies (in kJ/mol) and electron gain enthalpy (in kJ/mol) of few elements are given below: `{:("Elements",Delta_(i)H_(1),Delta_(i)H_(2),Delta_(eg)H),(I,520,7300,-60),(II,1681,3374,-328),(III,899,1757,+48),(IV,2372,5251,+48):}` Which of the above is likely to be He:A. IB. IIC. IIID. IV |
| Answer» As IV element has high values of `IE_(1)` and `IE_(2)` both so it can be He. | |