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The first IE and second IE (Kj mol^(-1)...

The first IE and second IE `(Kj mol^(-1))` and `dalta_egH(kJ mol^(-1))` of a few elements are given below:
Which of the above is likely to be the least reactive element

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Element V `(higher IE_1 and positive delta_egH)`
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A N EXCEL PUBLICATION-CLASSIFICATION TO ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
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